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Ashvjit Singh

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what is marketing?

why is 82 1/2 degree North selected as the standard meridian of India?

1.who was george eliot .name the novel written by this authour

Who was Razia Sultan? Explain broadly . Why didn't people like her ?

what are the causes of the world war 1

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Discuss Bohr's model of an atom.

Compare the characteristics of protons, neutrons and electrons.

Calculate the number of moles of ammonium sulphate present in 15.84 kg of it. (H=1, N=14,...

About 640 mL of carbon monoxide is mixed with 800 mL of oxygen and ignited in an enclosed...

How many litres of ammonia are present in 3.4 kg of it? (N = 14, H = 1)

Solid ammonium dichromate with relative molecular mass of 252 g decomposes according to t...

A compound of sodium, sulphur and oxygen has the following percentage composition. Na=29....

What is the volume of 7.1 g of chlorine (Cl=35.5) at S.T.P.

Calculate the mass of 0.2 moles of water (O=16, H=1).

A certain non-metal X forms two oxides I and II. The mass percentage of oxygen in oxide I...

Calculate the formula mass of CaCl2. [Ca = 40, Cl = 35.5]

Calculate the molar mass of HNO3. [N = 14, O = 16, H = 1]

Classify as physical or chemical change. a) Tearing of paper. b) Production of biogas c) ...

If salt is added to water, is the mixture homogeneous or heterogeneous. Give reason...

How are true solution, colloidal solution and suspensions different from each other?

What is the concentration of a solution in terms of mass percentage if it contains 20 g o...

What is the difference between? i) A mixture of iron filings and sulphur and ii) sulphur ...

Classify the following properties as those belonging to compounds and mixtures. a) A chem...

Briefly describe how to separate, i) Sulphur from a mixture of sulphur and sand. ii) Blac...

Differentiate between a homogeneous mixture and a heterogeneous mixture.

Describe how you would obtain the substances mentioned below, from the given mixtures. a)...

Give an example of each of the following types of mixtures. (a) Solid and liquid (b) Soli...

In the formation of sodium chloride from its constituent elements, do the properties of i...

How would you remove? i) Grease spots from clothes. ii) Obtain pure water from seawater. ...

Give four characteristics of a physical change

A pupil decides to separate powdered calcium carbonate from powdered sodium chloride by s...

Write down the technique used to separate. i) The constituents of the colouring matter in...

Describe a method for separation of the constituents of gunpowder.

A glass beaker containing water and a large crystal of potassium permanganate. It is kept...

Wet clothes when hung out in the sun, dry out. What is the process involved. Explain.

Explain why the volume of a gas increases when heated?

A gas jar containing vapours of bromine is inverted and covered mouth to mouth with anoth...

There is no rise in temperature of a melting solid despite applying heat to it. Explain.

What is common to dry ice and iodine?

Distinguish between evaporation and boiling.

When a bottle of perfume is opened, the odour is experienced all around the room. Explain...

Explain why a gas can be compressed to a great extent.

Give reasons why weight is not a property of matter.

How can the boiling point of pure water be raised, without making it impure?

When some alcohol is rubbed on the hand, the area feels cold. Explain

Plants can be made disease-resistant by_________. 1. heat treatment 2. hormone treat...

Which part of the plant breeding is an art? 1. Acclimatisation 2. Technique of hybri...

Which is the oldest breeding method? 1. Hybridization 2. Selection 3. Mutation 4....

If a plant breeder wants to develop a disease-resistant variety, what should he do first ...

Food-fodder mixed farming system corresponds to_________. 1. growing food crops alone ...

Which of the following is not a step of plant breeding? 1. Introduction 2. Cultivati...

The unlikely row pattern practiced in intercropping is_________. 1. 1:1 2. 1:2 3. ...

Who is the architect of green revolution in India? 1. M.S. Ramaiah 2. Aryabhatta 3....

Which of the following is not a characteristic of mixed cropping? 1. Minimises risk of...

Which of the following is not a basic need of man? 1. Food 2. Cloth 3. Leisure 4....

Which of the following is not a sustainable agriculture technique? 1. Mixed farming 2...

Living organisms are used in _____. 1. organic manure 2. biofertilizers 3. natural...

Gundhy bug is a pest of 1. sugarcane 2. rice 3. cotton 4. wheat

The unwanted plants are known as 1. weeds 2. shrubs 3. grasses 4. reeds

Rotation of crops is essential for 1. getting different kinds of crops 2. increasing...

Application of nitrogenous manure to a plant causes 1. growth retardation due to toxic...

Nodules with nitrogen-fixing bacteria are present in 1. gram 2. wheat 3. mustard ...

The element which is required in largest quantity by plants is 1. sulphur 2. calcium...

Which is the most important source of food and fodder? 1. Algae 2. Fungi 3. Lichen...

The chief cereal crop of India is 1. wheat 2. sorghum 3. maize 4. rice

All animals are 1. parasitic 2. saprophytic 3. autotrophic 4. heterotrophic

The science of vegetable culture is called 1. agriculture 2. horticulture 3. apicu...

Pick the odd one out. 1. Hand hoeing 2. Herbicides 3. Weeding 4. Interculture

Pick the odd one out. 1. Shoot borer 2. Gujhia 3. Pyrilla 4. Chickpea

Choose the abiotic factor. 1. Moisture content 2. Insects 3. Birds 4. Fungi

Choose the complex fertilizer. 1. Potassium sulphate 2. Calcium ammonium nitrate 3....

The crop which is affected by Red rot disease is 1. sugarcane 2. chickpea 3. rice ...

Which of these pests attack mustard? 1. Pod borer 2. Aphids 3. White grub 4. Pyr...

Which of these is a macro nutrient? 1. Copper 2. Iron 3. Chlorine 4. Magnesium

Which of these are autotrophs? 1. Plants 2. Animals 3. Both (a) and (b) 4. Neith...

Which of the following is an animal product? 1. Pulses 2. Milk 3. Cereals 4. Fru...

Induced breeding can be exploited to increase the production of 1. camels 2. horses ...

Which of the following is the high milk yielding variety of cow? 1. Holstein 2. Dors...

The method used maximum in cattle breeding is 1. random mating 2. artificial insemin...

The fungal disease causing maximum death of a poultry bird is 1. coryza 2. pullorium...

An exotic breed of poultry bird having high egg laying capacity is 1. White Leghorn 2...

The Jersey bull used for cross breeding is an exotic variety from 1. England 2. Scot...

Rinderpest disease of poultry is caused by 1. insects 2. bacteria 3. virus 4. pr...

Inland fisheries refers to 1. culturing fish in freshwater 2. trapping and capturing...

Developing embryo from a superior breed is transferred into the uterus of a female with i...

Murrah, Surti and Mehsana are different breeds of 1. cows 2. buffaloes 3. goats 4...

A common disease of cattle is 1. cow pox 2. goat pox 3. IPN 4. VHS

The disease (in goats) not caused by viruses is 1. black-quarter 2. sore mouth 3. ...

An exotic breed of goat is 1. Sannen 2. Decanny 3. Bengal 4. Jamunapari

The fastest growing carp is 1. Catla 2. Rohu 3. Mrigal 4. Silver carp

An exotic breed of poultry is 1. Peela 2. White leghorn 3. Kajal 4. Nurie

The disease that is not caused by fungus is 1. aspergillosis 2. cow pox 3. ringwor...

The disease that is caused by a virus is 1. amoebiosis 2. anthrax 3. rabies 4. r...

The breed that is not a buffalo is 1. Murrah 2. Mehsana 3. Red Sindhi 4. Surti

A breed of cow that was not used for cross breeding in our country was 1. Jersey 2. ...

'Operation flood' is related to: 1. Flood and disaster management 2. White revolutio...

Cows A and B are of same breed. Cow A is fed on grass and cow B is fed on maize, grass, b...

A certain health conscious person needs to choose between milk of the Surti and the Murra...

At a certain organisation in India cross breeds such as Karan swiss, karan fries etc. hav...

In a certain technique, the developing embryo from a superior breed is removed and transf...

Give two advantages of Holstein-Friesian over the Red Sindhi.

Chicken A is (all chicken in reference are of same variety egg laying) exposed to very br...

The production of food from animal sources has increased in the last few decades. Justify...

Why are wrestlers and sportsmen recommended to have egg, meat and fish as a part of their...

Give two reasons as to why there is tremendous scope to develop fisheries in India.

Which of the following soil is the best for plant growth? 1. Sandy soil 2. Clay 3. ...

The life supporting gases such as O2, CO2 and N2 are chiefly concentrated in the_______. ...

_____ of stratosphere provides protection to our life.

Which of the following is a renewable resource? 1. Soil 2. Water 3. Flora an...

Which one of the following is an example of non-renewable resources? 1. Wind 2. Wate...

Into how many zones is our country divided on the basis of intensity of rainfall?

Write a short note on the fertility of soil.

What are the harmful effects of ultraviolet radiations?

What direct value does a forest have for man?

Explain briefly why man is trying to use more and more of solar energy in place of petrol...

What are Biosphere reserves?

How are the forests useful to mankind?

What are the sources of air pollution?

List the measures adopted to control pollution.

How do you classify our natural resources?

Calcium deficiency occurs in the absence of vitamin_________. 1. D 2. A 3. C 4. ...

Fever, delirium, slow pulse, abdominal tenderness and rose coloured rash indicate the dis...

Which of the following is a mismatch? 1. Leprosy - Bacterial infection 2. AIDS - Bac...

Typhoid is caused by_________.

AIDS is due to_________. 1. reduction in number of helper T-cell 2. reduction in num...

T.B. is cured by_________. 1. griseofulvin 2. ubiquinone 3. streptomycin 4. enci...

Immuno-deficiency syndrome could develop due to_________. 1. defective liver 2...

Causative agent of T.B. is_________.

BCG vaccine is used to curb_________.

AIDS virus has_________. 1. single strand DNA 2. double strand DNA 3. single stran...

Congenital diseases are those which_________. 1. are deficiency diseases 2. a...

Which one of the diseases is not communicable? 1. Typhoid 2. Leprosy 3. Measles 4...

Which one is a communicable disease? 1. Malaria 2. Diabetes 3. Hypertension 4. H...

A chronic case of a disease denotes_________. 1. severe attack of the disease ...

An insect which transmits a disease is known as________

The proposed " two in one" salt contains iodine and_________

Sunlight enhances the production of_________. 1. vitamin A 2. vitamin B 3. vitamin...

Maize interferes with the absorption of_______

The 4D-syndrome characterises the following disease________

Xerophthalmia is caused due to the deficency of_________.

The vitamin that is not fat soluble is_________.

Oral rehydration solution does not contain_________. 1. sodium chloride 2. sodium bi...

The husk of the isabgol seed with water produces relief from________

A certain family buys salt of inferior quality. They also do not have access to sea food,...

A certain woman has a second pregnancy when the first child is too young. What is the fir...

An athlete has just won the marathon and he is very tired and on the verge of dehydration...

A patient has been recommended to eat the husk of isabgol with water or curd. What is he ...

What is other chemical name of vitamin -C?

A scientist in CDRI, Lucknow developed an anti-cerebral malarial drug called A from a pla...

State the characteristics of a musical note on which its pitch, loudness and quality depe...

What is the wavelength of sound waves produced in air by a vibrating tuning fork whose fr...

Define the terms velocity and wavelength applied to sound wave and state the relation bet...

Explain how is the principle of echo used by the dolphin to locate small fish as its...

Explain how is the principle of echo used by the bat during its flight at night.

A rifle shot is fired in a valley between two parallel walls. The echo from one wall is h...

A boy fires a gun and hears the echo 2 seconds later. If he is 480 m away from a wall, ca...

A girl claps and hears the echo after reflection from cliff which is 660 m away. If the v...

Why do echoes produced in an empty auditorium usually decrease when it is full of a...

What is meant by echo? What are the conditions necessary for its formation?

State the law of conservation of energy

Name the two factors on which the kinetic energy of a body depends.

Define power.

Define potential energy.

Flowing water can rotate a turbine. Which type of energy does the turbine us...

Name two forms of mechanical energy.

What kind of energy transformation takes place in a toy bus driven by a winding key?

How is work measured?

Define kinetic energy.

List out the conditions to be satisfied for work to be done.

List out the factors on which the acceleration due to gravity of a planet depends on.

What would you observe if there are two massive bodies A and B of equal masses whic...

What will happen to the force of gravitation between two objects A and B if the dis...

Two bodies of mass 10 kg and 12 kg are falling freely. What is the acceleration produced ...

What is acceleration due to gravity?

What do you mean by a freely falling object?

List out the physical quantities on which the gravitational force between objects depends...

Why is G called a universal constant?

State Newton's law of gravitation.

Define force of gravitation.

It is possible to remove a tablecloth from a table without disturbing the dishes on...

State the law of inertia (Newton's first law of motion).

Why does a passenger standing in a bus move forward when the brakes are applied?

Who first stated the law of inertia? Describe a simple experiment to demonstrate th...

A passenger jumping out of a moving bus falls forward if he does not run forward - Identi...

A passenger moving forward when a train stops - Idenitfy the type of inertia.

an athlete runs a distance before taking a leap in a high jump - Identify the type of ine...

Falling of fruits when a branch of a tree is shaken - Identify the type of inertia.

Explain Newton's Third law of motion.

Explain Newton's Second law of motion.

Explain Newton's first law of motion.

Define Inertia of direction.

Define Inertia of rest.

Define Inertia of Motion.

Define Inertia.

What is the effect of force when a soft rubber ball is squeezed between your hands?

What is the effect of force when a spring is stretched.

What is the effect of force when a football lying on ground is kicked.

What is the effect of force when a player hits an in-coming ball with a hockey stick...

What is the effect of force when brakes are applied to a moving car.

What is the effect of force when a fielder catches a cricket ball.

What are balanced and unbalanced forces?

Define force.

A body travels from A to B in 10 seconds with a speed of 50 km/h and returns with a speed...

A train moving with a uniform speed covers a distance of 1200 m in 20 s. Calculate (i) th...

Give an example of a body moving with a uniform speed but variable velocity.

A scooter travels a distance of 600 m in 20 seconds southwards.(a) What is the speed of t...

Type of motion of a body whose speed remains constant but velocity changes continuou...

Define Displacement.

Distinguish between:(a) Speed and Velocity(b) Uniform acceleration and Variable accelerat...

(i) Define the following terms:(a)speed (b) velocity (c) uniform velocity

Define - a) non uniform velocity(b) acceleration (c) retardation.

To which category do ferns belong?

Why are fungi called heterotrophic?

Give some example of class amphibia.

Explain the name of cryptogamae.

Name two kingdom systems.

Give two common features of plants.

What is the scientific name for human beings? (Seperate the components)

What is 'Binomial Nomenclature'?

Give an example to illustrate how taxonomy is used in biological sciences.

What is the necessity of classification of organisms?

Give two examples of tissue that is used for binding, supporting and packing together dif...

Differentiate between striated muscles and unstriated muscles.

Cells X are tubular in shape and have perforated walls and translocate materials fr...

Give two characteristic features of cork.

Differentiate between parenchyma and chlorenchyma. Give one function of chlorenchym...

Cells X are usually living and contain dense cytoplasm and a large vacuole is present in ...

Cell X provides extra mechanical support for plants at certain places.

Cells X are formed as the roots and stem grow old. Identify X. Give one function.

Tissue A is usually present in the outermost layer of the plant body. Identify A and give...

Tissue A and tissue B constitute tissue C. A carries water while B carries food for...

Differentiate between smooth and rough endoplasmic reticulum.

The daughter cell of meiotic division is different from the parent cells. Explain

Why is variation not possible in mitotic division of cells?

Why is the golgi apparatus called the secretory organelle of the cell?

There would be no plant life if chloroplasts did not exist. Justify.

Why are mitochondria also called 'The Power House of cell'?

Why are peroxisomes mostly found in kidney and liver cells?

Why are lysosomes called digestive bags or suicide bags?

What is the function of the cell wall?

Why were the scientists not able to observe most of the cell organelles before 1940?

Name the fundamental particles whose relative charge is a) +1 b) - 1 C) 0

What is the drawback of Rutherford's nuclear model of the atom?

Describe Rutherford's model of an atom.

Who discovered the nucleus within an atom? And how?

What happens to e/m ratio of positive rays and why?

What are anode rays? State three properties of anode rays

a) Which atom contains only two fundamental particles? b) Which particle has constant cha...

What are cathode rays? How are they formed?

Define the following terms: a) Atomic b) Mass number c) Nucleus.

Define Nucleons.

What is an electron? State its relative mass and charge

What is gram molecular mass?

The mass of a single atom of an element Z is 2.65x10-23g. What is its gram atomic mass?

How many gram atoms are present in 69 grams of sodium?

What do the following stand for? (i) P4 and 4P (ii) O2 and 2O

What do you understand by atomicity of an element? Give an example of a polyatomic molecu...

n an experiment it was found that litharge, red oxide of lead and lead peroxide contained...

State the laws of chemical combination.

Define atomic mass of an element.

What is the difference between symbol of an element and formula of an element?

What is a symbol? What information does it convey?

How can you prove that air is a mixture?

How would you separate a mixture of NH4Cl and I2?

Action of heat on blue vitriol is a physical as well as chemical change. Justify.

Give one example for each of the following mixtures: i) Solid/solid (homogeneous) ii) Sol...

How would you separate a mixture of ammonia and hydrogen?

Give two differences between elements and compounds.

Give the characteristics of a pure substance.

Classify the following as element, compound or mixture. i) Zinc amalgam (ii) Sea water (i...

Mention whether the following statements are true or false. Correct the false statements....

Define an element.

What is the principle used in a pressure cooker?

Why does water boil at a lower temperature at higher altitudes?

What happens when a liquid is heated?

List two properties that liquids have in common with gases.

Name the properties that decide whether a given substance exists as a solid, liquid or a ...

Among solids, liquids and gases which one has the maximum movement of molecules, the maxi...

What is matter? How is it classified?

Why do solids not diffuse into one another?

A small quantity of a gas is let into a large evacuated chamber. a) How much of the...

A substance has a definite volume but no definite shape. State whether this substan...

Malaria is caused by a_________. 1. protozoan 2. fungi 3. virus 4. bacteria

The disease that is non-communicable is_________. 1. malaria 2. marasmus 3. AIDS ...

The persistence of audible sound due to the successive reflections from the surroun...

Vibrations inside the ear are amplified by the three bones namely the _________ in the mi...

The vibrations or the pressure variations inside the inner ear are converted into electri...

SI Unit of time period is __________.

The distance between a compression and the next rarefaction of a longitudinal wave is ___...

Unit of wavelength is __________.

If a vibrator strikes the water 10 times in one second, then the frequency of wave is ___...

Which of the following quantities is transferred during wave propagation?

An example for mechanical wave.

An ultrasonic wave is sent from a ship towards the bottom of the sea. It is found that th...

The technique used by bats to find their way or to locate food is _______.

The method of detecting the presence, position and direction of motion of distant objects...

Sound and light waves both 1. have similar wavelength 2. obey the laws of reflection...

A source of frequency of 500 Hz emits waves of wavelength 0.4 m, how long does the...

The time period of a vibrating body is 0.05 s. The frequency of waves it emits is

A sound source sends waves of 400 Hz. It produces waves of wavelength 2.5 m. The ve...

Which of the following will remain unchanged when a sound wave travels in air or in water...

The speed of sound in medium depends upon 1. amplitude 2. frequency 3. wavelength ...

The frequency which is not audible to the human ear is 1. 5 Hz 2. 50 Hz 3. 500 Hz ...

Sound waves are 1. longitudinal 2. transverse 3. partly longitudinal and partly tr...

The physical quantity, which oscillates in most waves, is 1. mass 2. energy 3. amp...

Sound waves do not travel through

Which of the following is not a characteristic of a musical sound? 1. Pitch 2. Wavel...

The amplitude of a wave is ______.

The frequency of a wave travelling at a speed of 500 ms-1 is 25 Hz. Its time period...

The relation between wave velocity 'v', frequency 'f ', and wavelength 'l' is _____...

When sound travels through air, the air particles ______. 1. vibrate along the directi...

Bats detect the obstacles in their path by receiving the reflected ______.

The minimum distance between the source and the reflector, so that an echo is heard is ap...

When a wave travels through a medium ______. 1. particles are transferred from one pla...

An object of mass 1 kg has potential energy of 1 joule relative to the ground when ...

Name the physical quantity which is equal to the product of force and velocity.

If air resistance is negligible, the sum total of potential and kinetic energies of a fre...

A 1 kg mass has a kinetic energy of 1 joule when its speed is

An iron sphere of mass 30 kg has the same diameter as an aluminium sphere whose mass is 1...

The type of energy possessed by a simple pendulum, when it is at the mean position is

A man of mass 50 kg jumps to a height of 1 m. His potential energy at the highest point i...

If the speed of an object is doubled then its kinetic energy is _____.

A 40 newton object is released from a height of 10 m. Just before it hits the ground, its...

Two objects of masses 1 x 10-3 kg and 4 x 10-3 kg have equal momentum. What is the ratio ...

Power is a measure of the _______ 1. rate of change of momentum 2. force which produ...

The P.E. of a body at a certain height is 200 J. The kinetic energy possessed by it when ...

A coolie carries a load of 500 N to a distance of 100 m. The work done by him is

3730 watts = ______h.p.

The unit of power is _______ 1. watt per second 2. joule 3. kilojoule 4. joule p...

A body of mass 2 kg is ~drop~ped from a height of 1m. Its kinetic energy as it tou...

Which form of energy does the flowing water possess?

1 joule = 1 _______ 1. N m2 2. 3. N m 4. N2 m2

Work done = Force x _______.

If the mass of a ball is 5 kg on earth, then what would be its mass on Jupiter?

The normal force per unit area is called ______

The upward force acting on an object submerged in a liquid is ______.

100 kg.wt=________N .

SI unit of weight is ______.

Mass remains ______ throughout the universe.

The weight of an object of mass 15 kg at the centre of the earth is _____.

A feather and a coin released simultaneously from the same height do not reach the ground...

The acceleration due to gravity of a body moving against gravity is ________.

The second equation of motion for a freely falling body starting from rest is _______.

If acceleration due to gravity on earth is 10 m/s2 then, the acceleration due to gravity ...

The acceleration due to gravity is zero at ______.

A stone ~drop~ped from the roof of a building takes 4 seconds to reach the ground. ...

A ball is thrown up and attains a maximum height of 100 m. Its initial speed was __...

A stone is ~drop~ped from a cliff. Its speed after it has fallen 100 m is ________....

What is the final velocity of a body moving against gravity when it attains the maximum h...

When an object is thrown up, the force of gravity _________. 1. is opposite to the dir...

Name the fundamental force which holds the planets in their orbits around the sun.

The force of gravitation between two bodies in the universe does not depend on 1. the ...

If the distance between two bodies is doubled, the force of attraction F between th...

What is the value of gravitational constant?

SI unit of gravitational constant is __________.

The resultant of action and reaction forces is _______. 1. greater than zero 2. less...

Momentum of a massive object at rest is _______. 1. very large 2. very small 3. ze...

The two factors on which the momentum of a body depends are ______ and _________ .

What is the momentum of a man of mass 100 kg when he walks with a uniform velocity ...

The product of mass and velocity is known as ____________ . 1. acceleration 2. force...

The momentum of a toy bus of 0.01 kg moving with a velocity of 5 m/s is

SI unit of impulse is ___________.

Impulse = _________(formula). 1. 2. 3. 4.

1kg m/s = _________. 1. 1 N s 2. 1 N 3. 1 N m 4. 10 N s

The physical quantity, which is equal to rate of change of momentum, is ______.

The physical quantity, which is equal to change in momentum, is __________.

1 newton = ________(its unit) 1. 2. 3. 4.

An athlete can take a longer jump if he comes running from a distance as compared to that...

What is the force acting on an object of mass 10 kg moving with a uniform velocity of 10 ...

A force of 10 N is acting on an object of mass 10 kg. What is the acceleration produced i...

When an object undergoes acceleration 1. its speed always increases 2. its velocity ...

The acceleration in a body is due to 1. balanced force 2. unbalanced force 3. mass...

When a force of 1N acts on a mass of 1kg that is free to move, the object moves with 1....

Name the property of matter due to which a body continues in its state of rest or u...

The law that gives a qualitative definition of force is ________ 1. Newton's second la...

The sparks produced during sharpening of a knife against a grinding wheel leaves the rim ...

The physical quantity, which is the measure of inertia, is ________ 1. density 2. we...

The resultant of balanced forces is ________ 1. non zero 2. equal to zero 3. not e...

A and B are two objects with masses 100 kg and 75 kg respectively, then ________ . 1. ...

Inertia is ________ 1. a property of matter 2. a type of force 3. the speed of an ...

Name the instrument used to measure instantaneous speed of a vehicle.

The slope of a v-t graph gives ________.

Distance-time graph is a straight line for __________ motion.

Motion along a straight line is called __________ motion.

When the distance covered by an object is directly proportional to time, it is said to tr...

Name the physical quantity that is defined as the rate of change of displacement.

The area under the speed-time graph gives the ________.

When an object moves in a fixed direction with uniform acceleration, the speed-time graph...

The speed-time graph for a particle moving at constant speed is a straight-line ________ ...

Displacement is a ________ quantity. 1. scalar 2. vector 3. derived 4. linear

The average speed of a car which covers half the distance with a speed of 20 m/s and othe...

The S-t graph for uniform speed is

Name the physical quantity which we get from a S-t graph.

What do you infer, if S-t graphs of two cyclists meet at a point?

When a graph of one quantity versus another results in a straight line, the quantities ar...

In the case of a rectilinear uniform motion, distance-time graph is a

When an object is moving with uniform velocity, what is its acceleration?

Retardation is __________.

SI unit of acceleration is __________.

A body moving along a straight line at 40 m/s undergoes an acceleration of 4. After 10 se...

Give the equation of motion connecting u, v, a and s where the symbols have their usual m...

For the equation - S = 10t + 4t*t what is the acceleration of the body?

The distance (s) in metres travelled by a particle is related to time (t) in seconds by t...

Birds differ from bats in absence of 1. homeothermy 2. four-chambered heart 3. tra...

What is the scientific name of the National bird of India?

Elasmobranchs do not have 1. placoid scales 2. gill-slits 3. notochord 4. opercu...

Hag fish is the common name of __________.

Spiders and scorpions are 1. insects 2. millipedes 3. arachnids 4. crustaceans

Respiration in arthropods occurs through __________.

The body cavity of arthropoda is

In platyhelminthes, the excretory organs are 1. nephridia 2. malpighian tubules 3. ...

Mesoglea is characteristic of 1. platyhelminthes 2. aschelminthes 3. cnidaria 4. ...

Choanocytes are unique to 1. protozoa 2. porifera 3. mollusca 4. echinodermata

'Venus flower basket' is the dried skeleton of 1. euspongia 2. euplectella 3. spon...

The algal partner of a lichen is called 1. mycobiont 2. phycobiont 3. both A and B...

In Whittaker's classification, unicellular organisms are grouped under _________.

Which taxonomic term may be substituted for any rank in the classification?

A group of freely inter-breeding organisms constitutes a _________.

Binomial nomenclature was introduced by ___________.

Chondrichthyes are also called 1. cartilaginous fish 2. bony fish 3. lamprey 4. ...

Give examples of phylum Echinodermata.

In phylum Aschelminthes, the alimentary canal is 1. complete 2. incomplete 3. not ...

The class Aves have all the following features except that their 1. fore limbs are mod...

Sub-phylum urochordata includes _____. 1. amphibians 2. marine animals 3. terrestr...

Protochordates consist of _______ and _______. 1. urochordata and cephalochordata 2. ...

Radial symmetry is found in _________. 1. protozoa 2. coelenterata 3. flatworms 4...

Who is the Father of Taxonomy?

Homo: generic name :: sapiens: ________.

The science of classification is called _________.

Smooth muscles occur in _________________. 1. uterus 2. artery 3. vein 4. all th...

Tendon is a structure which connects ______________.

Sprain is caused by excessive pulling of _______________. 1. nerves 2. tendons 3. ...

Fluid part of blood after removal of corpuscles is ______________.

Ligaments and tendons are formed of _________________. 1. epithelial tissue 2. muscu...

The end of a long bone is connected to another bone by ____________

Which type of tissue forms glands?

Ciliated epithelium is found in ________________.

Phloem in the plants perform the function of ______________. 1. conduction of food 2....

Which of the following tissues is composed of mainly dead cells? 1. Phloem 2. Epider...

Collenchyma mainly forms _________________. 1. hypodermis 2. epidermis 3. phloem ...

Active division takes place in the cells of ________________. 1. xylem 2. phloem 3....

The cell division is restricted to ___________. 1. meristematic cells 2. permanent c...

Plant length is increased by _______________. 1. apical meristems 2. lateral meriste...

A group of cells alike in form, function and origin are called _________.

______ tissues prevent loss of water in plants.

_____________ tissue forms new cells in plants.

: A cell body which contains a nucleus and cytoplasm is ____________. 1. b...

Striated muscle is also called ______.

Cuboidal: Epithilial:: Cardiac: _______

Which are the four types of animal tissues?

Parenchyma: Simple::Phloem: _____________.

Parenchyma is a type of ______________. 1. complex tissue 2. simple tissue 3. xyle...

Which are the two types of tissues?

Organisms lacking nucleus and membrane bound organelle are _________.

Double membrane is absent in ______________. 1. lysosomes 2. chloroplast 3. nucleu...

The largest cell in the human body is ___________.

The organism that is an exception to the cell theory is ____. 1. virus 2. bact...

The largest animal cell is ____.

The point where crossing over of chromatids takes place is ___.

Division of cytoplasm is known as ______________.

Synapsis occurs during __________. 1. Mitosis 2. Meiosis 3. Amitosis 4. No...

A cell has 4 chromosomes. After mitotic cell division the number of chromosomes in the da...

Centrioles are associated with ____________. 1. digestion 2. respiration 3. reprod...

The network of endoplasmic reticulum is present in the ____. 1. nucleus 2. chromosom...

Lysosomes are reservoirs of ____.

The site of oxidation in a cell is the _____.

The 'Scavengers' or 'Digestive bags' of a cell are ____.

The power house of a cell is ____.

The secretory organelle of the cell is also called ____.

Organelle not present in animal cells is _____. 1. plastid 2. centrosome 3. nucleu...

Vacuoles (in plant cells) _____. 1. produce energy for the cell 2. synthesize protei...

Centrosomes are present in _____. 1. animal cells only 2. plant cells only 3. in b...

The resting or non-dividing stage between two successive mitotic divisions is called ____...

The correct order of the phases in mitosis are ____. 1. prophase, telophase, metaphase...

ATP stands for _____.

Mitochondria are also called _____.

Tick the wrong choice: Plasma or cell membrane is ____. 1. outer covering of each cell...

The approximate number of cells in a normal human body is ____.

The fixed circular paths around the nucleus are called_________.

During a chemical reaction, atomic number_________. 1. changes 2. remains same 3. ...

The other name of (Hydrogen with one proton & 1 neutron) is _________...

An element has an electronic configuration of 2, 8, 7. Its valency is

In Rutherford's alpha-scattering experiment, a foil of element that was used ____________...

The volume of the nucleus of an atom when compared to the extra nuclear part is_________....

The element X has 2 valence electrons. It is a____________. 1. metal 2. non-metal 3...

Mass number is equal to the_________. 1. number of protons + number of electron...

Chadwick got the Nobel Prize for the discovery of __________.

Carbon-12 atom has_______________. 1. 6 electrons, 6 protons, 6 neutrons 2. 6 electr...

The proton is heavier than an electron by___________. 1. 1850 times 2. 1840 times 3...

The absolute charge of an electron is___________.

Cathode rays are deflected towards__________. 1. positive electrode 2. negative elec...

Which of the air pressures is appropriate for the production of cathode rays in the disch...

The K, L and M shells of an atom are full. Its atomic number is_______.

: The mass of the atom is determined by________. 1. neutrons 2. neutron ...

An atom has a mass number of 23 and atomic number 11. The number of protons are_________....

Electron was discovered by___________.

Almost the entire mass of an atom is concentrated in the__________. 1. proton 2. ele...

A sample contains 22 g of carbon dioxide. This is equal to 1. One molar volume of carb...

The number of molecules in 4.25 g of ammonia is approximately 1. 1.0 x 1023 2. 1.5 x...

One mole of H2O corresponds to 1. 22.4 litre at 1 atm and 250C 2. 6.02 x 1023 atoms ...

The number of moles in 5 grams of calcium is _________. 1. 0.125 mole 2. 5 mole 3. ...

Avogadro number represents the number of atoms in ________. 1. 12 grams of 12C 2. 32...

The number of atoms in a molecule of the elementary substance is called ________. 1. A...

Atomic mass of calcium is 40. The mass of 2.5 gram atoms of calcium is _______. 1. 40 ...

The molecular mass of ammonia is _________. 1. 17 grams 2. 31 grams 3. 20 grams 4...

The smallest particle of a substance that is capable of independent existence is ________...

The molecular formula of potassium nitrate is ________. 1. KNO 2. KNO3 3. KNO2 4....

The atomic mass of sodium is 23. The number of moles in 46g of sodium is ________. 1. ...

All samples of carbon dioxide contain carbon and oxygen in the mass ratio of 3:8. This is...

The value of Avogadro constant is ___________. 1. 6.022 x 1024 2. 6.022 x 1022 3. ...

Indivisibility of an atom was proposed by ___________. 1. Dalton 2. Rutherford 3. ...

Tyndall Effect in colloids is due to _________. 1. dispersion of light 2. merging of...

Fractional crystallization is used to separate which of the following? 1. Two solids ...

A true solution is a _________. 1. homogeneous mixture 2. heterogeneous mixture 3. ...

An example of a chemical change is _____. 1. formation of clouds 2. glowing of an el...

The process used to separate a mixture of ammonium chloride and iodine is ______. 1. s...

On adding excess salt to a solution, it shows no change in solubility. This shows________...

Iron rod turns red on heating. The change is a______ 1. physical change 2. temporary...

Which pair is a miscible liquid mixture? 1. Methyl alcohol and acetone 2. Mercury an...

Chemical changes are __________. 1. temporary, reversible and a new substance is produ...

When sodium oxide reacts with water it undergoes chemical change to form ________. 1. ...

In a colloidal solution________ 1. the size of a colloidal particle lies roughly betwe...

The quantity of solute present in a given amount of solution represents_______ 1. solu...

Which property does not describe a compound? 1. It is a pure substance. 2. It is mix...

Which of the following is not a mixture? 1. Blood 2. Silver coins 3. Saliva 4. P...

Which one of the following is monoatomic? 1. Oxygen 2. Hydrogen chloride gas ...

Which of these elements is not a metalloid? 1. Tungsten 2. Germanium 3. Bismuth 4...

A mixture of mercury and copper is an example of _______. 1. solid and solid 2. liqu...

A mixture of oil and water is an example of _____________. 1. compound 2. two elemen...

For any substance the temperature remains same during the change of state due to ________...

Temperature is a measure of ___________. 1. total kinetic energy of molecules 2. tot...

Particles of matter are __________. 1. stationary 2. vibrating in one position 3. ...

The force between particles of matter is called as ___________. 1. cohesive force 2. ...

Matter changes from one state to another with change in _________. 1. density 2. tem...

A solid that sublimes on heating is _________. 1. sodium chloride 2. copper sulphate...

Which among the following is a solid at room temperature? 1. Nitrogen 2. Potassium p...

A property not possessed by a fluid is _________. 1. it can flow 2. it has mass 3. ...

Mixing of gases is called ______. 1. diffusion 2. effusion 3. filtration 4. sedi...

In gases, particles vibrate _________. 1. about their mean position 2. about a verti...

The state of matter with only one free surface is _______. 1. liquid 2. gas 3. sol...

What is amu ?

Define atomic energy.

Floods can be prevented by_______.

Red Data Book provides a list of _______. 1. advanced plants 2. rare, endangered or ...

: Biogas generation is mainly based on the principle of_______. 1. ferment...

hich one of the following is not a fossil fuel? 1. Natural gas 2. Petrol 3. Coal ...

The death of the last individual of a species is called_______.

Sanctuaries are established to_______.

Atomic energy is obtained by using ores of_______.

A biosphere reserve conserves and preserves_______. 1. wild animals 2. wild land 3....

_____ is the major raw material for biogas.

Both power and manure are provided by _______. 1. thermal plants 2. nuclear plants ...

Which of the following soil is the best for plant growth? 1. Sandy soil 2. Clay 3. ...

In a certain town some people were affected by a ’flu’ epidemic. In the f...

The digit 3 is written at the right of a certain 2-digit number forming a 3-digit numbe...

Given that 9/25 = 0.36 then 0.9/0.25 is equal to

The number of three-digit numbers that are divisible by 9 and contain no even digits is...

A regular polygon with 2008 sides and perimeter 1 has area approximately equal to

Five straight lines are drawn. What is the maximum number of points of intersection?

What is the average distance between two di®erent corners of a square of side 1 ?

If a and b are nonzero numbers such that a and b are the two roots of x2+ax+b = 0,b eq...

If 173 digits were used to number the pages of a book, starting at page 1, then the num...

What is the remainder when 200000000000000008 is divided by 3 ?

Square root of 36 to the power 36 equals

The tens digit of the product 1 x 2 x 3 x ... x 98 x 99...

Why do we need to resort to water harvesting when we can collect rain water and use it?...

Why do you think there should be equitable distribution of resources? What forces would...

What are ‘Biodiversity hot spots’? What is the measure of biodiversity in an...

How did ’Chipko Andolan’ ultimately benefit the local population?

What is considered as eco –religion?

Why there is greater a number of individuals at the lower trophic level of an ecosystem...

Why the aquarium needs regular cleaning?

Why do we keep small aquatic plants in an aquarium?

What was the disadvantage of using disposable cups made of clay?

If cloth bags and plastic bags are provided to you. Which would you prefer and why?

What will happen if there are producers and consumers and no decomposers in a ecosystem...

A group of activists are protesting against the construction of a dam due to ecological...

A house has a lot of rectangular setups with glass cover and black surfaces. On opening...

A student uses lamp- black for the black surface in the solar cooker. Is he at advantag...

Two students construct solar furnaces, one uses a concave mirror while the other uses a...

In a region having hundreds of industries where oxides of carbon, nitrogen and sulphur ...

How is the construction of dams connected to the green house effect?

A car is parked in the sun with its windows shut, the temperature inside the car is fou...

A student says a. he uses water with a difference in temperature of 20 degree b. The w...

A coil of insulated copper wire is connected to a Galvanometer. What will happen if a b...

Two parallel long straight wires are carrying same current in a same direction perpendi...

A magnet is moved in to a coil having a galvanometer along its axis, (I) Galvanometer s...

If the resistance of an electrical component remains constant while the potential diffe...

Current in a wire is due to the flow of electrons in the wire. Although the drift speeds...

A battery of 9 v is connected in series with resistance of0.2Ω, 0.3Ω, 0.4&Om...

The electric power consumed by a device may be calculated using either of the two expre...

A wire of length L and resistance R is stretched so that its length is doubled. How wil...

Two wires of same material and same length have radii r1 and r2. Compare their resistan...

Two wires are of the same length, same radius, but one of them is of copper and the oth...

Two metallic wires A and B of same material are connected in parallel. Wire A has lengt...

A hot plate of an electric oven connected to a 220 volt line has two resistance coil A ...

The defect in vision developed due to gradual weakening of ciliary muscle and diminishin...

When a torch light is focussed on the eye which cells get activated immediately? a) Sen...

Do all people looking at a star, locate it at the same apparent position? If not explain...

You are asked to set up traffic lights for a railway station, why would you choose red ...

A person is able to see objects clearly only when these are lying at distances between 5...

A person is able to see objects clearly only when these are lying at distances Between ...

A beam of white light is passed through a hollow prism, will it produce a spectrum?

A person with a myopic eye cannot see objects beyond 1.2 m distinctly. What should be t...

A student has difficulty in reading the black board while sitting in the last row. What ...

What happens to the image distance in the eye when we increase the distance of an objec...

What on earth would liquid diamond or gold taste like if it was cool enough to drink?

Can liquid diamond be made and if so, what temperature would be needed?

What's the temperature of a candle flame?

What happens to water if you compress it more and more and more... (It can't just disappe...

What weird and cool effects occur when two gigantic mirrors face each other?

There are more than 200 sub-atomic particles. Can you name me 10 of them?

Give the factors, which cause reduction in immunity of the body?

What is immunity and immune system?

Do all microbes go to the same organ or tissue or they go to the different organs? If the...

What are the methods of the prevention of tuberculosis?

What are the symptoms of tuberculosis?

What are the causesof tuberculosis?

What is the mode to treat malaria?

How does malaria spread?

Name the disease against which immunization was discovered.

Who discovered immunization?

What is immunization?

Write the preventive measures of Diarrhoea.

Write the symptoms of Diarrhoea. Write the preventive measures of Diarrhoe...

Name the causal organisms of Diarrhoea.

Explain how HIV-AIDS virus affects and damages our body?

Define the basis of principle of immunization.

Give some symptoms of Hepatitis?

What is the general way to prevent infections?

Why penicillin affects only bacteria not human cells?

What is the difference between acute and chronic diseases?

Why the making of antiviral medicines is harder than antibacterial?

How does AIDS virus spread?

How does community health depend on personal health?

Name 2 diseases for which vaccines are not available.

Name four diseases for which vaccines are available.

What is a disease?

Define health.

What are vectors?

Which organism is responsible for causing malaria?

What are the social aspects that are necessary for individual health?

What happens if the body is suffering from disease?

Which type of disease is more dangerous for the health?

Write one example of both infectious and non-infectious disease?

Write the name of the organism that causes kala-azar

How many types of ration cards are there ?

What do you mean by Issue Price ?

What are the new initiatives of FCI ?

What is the Minimum Support Price ?

What are the objectives of FCI( Food Corporation of India) ?

What are the dimensions of food security ?

What do you mean by Food security ?

Uses of loss????

The mass of 0.5 mole of sugar is ?

The number of aluminium ions present is 0.61 gm of aluminium oxide is ?

The simplest combination of ions that produces an electrically neutral unit, is called

A concave mirror and convex lens are held in water. What change, if any, do you expect ...

Light having a free space wavelength λ= 500 nm passes from vacuum into diamond h...

Under what condition a convex lens when placed in a medium behaves as an ordinary glass...

Braying donkeys with drooping ears is crossed with silent donkeys with erect ears. Bray...

A man with type A blood has a wife with type B. They have a child with type O blood. Gi...

If species –A has more common characteristics with species -C, where as species-B...

A pea plant with purple flowers were crossed with white flowers producing 40 plants wit...

Why does the tadpole resemble a fish?

In python and whale, the vestigial remains of hind limbs and pelvic girdle are present....

The nictitating membrane present in frogs and birds serves as a covering membrane for t...

The tendrils in cucumber and thorns in Bougainvilla are Homologous organs. Why?

Why is regeneration considered a method of reproduction? Why does asexual mode of repro...

Leaves ~drop~ off seasonally. Attribute a reason.

’Adrenal’ is called the “”stress managing glands of the body&rdq...

Pancreas is the overall controller of the blood glucose level. How do you support the s...

How does a plant shoot bends, when the plant is placed in a room having only one open w...

On touching a hot plate, you suddenly withdraw your hand. Which category of neurons bec...

What type of movement is shown by “Mimosa” plant leaves when touched with a ...

Why is carbon-di-oxide mostly transported in the dissolved form in our blood than oxygen...

Why is the inner wall of the alimentary canal not digested although the digestive enzyme...

Normally a vein opens into a large vein or into the heart but does not end in capillarie...

What advantage does a terrestrial organism have over an aquatic organism with regard to ...

Is leaf fall related to excretion? How?

Why enzymes are in active form even when there is no food in our stomach?

A certain tissue in a green plant somehow gets blocked and the leaves wilted. What was t...

Why don’t the lungs collapse even after forceful expiration?

If there were no algae, there would be no fish in the sea. Comment on this statement.

Anshul is fond of eating chocolates but her father advices to brush the teeth after eati...

We are gifted to have haemoglobin as oxygen carrier and not diffusion. Do you agree with...

A T P is the energy currency of the cell. Do you agree with the statement?

Is the food vacuole of amoeba temporary structure or permanent structure?

The elements with atomic numbers (Z) equal to 107 and 109 have been made recently. The ...

Can we use sodium metal for drying alcohol, why?

A compound X has molecular formula C 4H10.It undergoes substitution2 in the presence o...

Three bottles without labels contain alcohol, ethanoic acid and soap solution separatel...

Hydrocarbons X and Y have melting points-190 0 C & -900 C respectively. Which one...

An organic compound X with a molecular formula C 2H6O undergoes4 to form a compound Y....

If the pH of water is two, out of soap and detergent which one will you use for cleanin...

Tarnished copper vessels are cleaned with lemon or tamarind juice. Explain why these su...

An ‘A’ element when is burnt produces a gas that turns lime water milky and ...

A girl has a hobby to collect coins of different countries. One day she observed the bl...

Why pure metal is always collected at cathode during electrolytic refining?

A reddish brown metal ‘X’ on heating forms a black coating of oxide’Y&...

A metal ‘X’ is found in the form of filings burn vigorously when sprinkled o...

A yellow coloured powder ‘X’ is soluble in carbon di sulphide .It burns with...

A metal ‘X’ is highly malleable and ductile. Its foil is used for wrapping f...

A milk man adds a very little amount of baking soda to fresh milk. a) Why does he shift...

‘A’ is soluble acidic oxide and ‘B’ is soluble base. Compared to...

A metal is found in the lab in the form of grey colored granules. It reacts with dil.H ...

Compound ‘X’ forms enamel of teeth. It is the hardest substance of the body....

A colourless compound ‘x’ obtained from sea water used in daily meals is ta...

What is the colour change when a stain of curry on a white cloth comes in contact with ...

A person is caused with burns while adding water into a concentrated acid. What was the...

Both glucose and HCl contain hydrogen in them, but HCl shows acidic character Whereas g...

A compound ‘X’ is an important ingredient of an antacid. It is also used in ...

An aqueous solution of metal nitrate ‘X’ reacts with Sodium bromide solution...

Silver articles develop black coating and copper articles develop green coating. Which ...

A metal nitrate solution ‘A’ is added to reddish brown metal ‘B’...

A compound ‘X’ is used for drinking has pH=7.Its acidified solution in prese...

Grey colored metal ‘X’ is used in making dry cell. It is also used for coati...

Arun took a pale green substance X in a test tube, and heated it over a flame. He observ...

Ashok wanted his house to white washed. He bought 10kg quick lime from market and dissol...

What color difference would you observe on burning a candle and a magnesium ribbon?

Which term is used to indicate the development of unpleasant smell and taste in butter ...

What are the factors that determine the state of a substance?

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