# CBSE Extra Questions For Class 9 Science

## Extra Questions for Class 9 Science

Extra questions for CBSE Class 9 Science will assist students in properly preparing for examinations throughout the academic year. These CBSE  Class 9 Science extra questions are based on the most recent CBSE Class 9 Science Syllabus and cover all of the major themes. students’ ideas will be enhanced and their understanding of how questions are phrased in the test will be improved.  As a result, students must prepare for the tests by practicing these questions. Overall, students benefit from this, which helps them to score better marks in examinations. Students can visit the Extramarks website and access the important questions with a click.

## Importance of CBSE Extra Questions for Class 9 Science

To recall information successfully, preparation necessitates the completion of a large number of questions on a single topic. The CBSE Class 9 Science additional questions presented here bring out the crucial subjects prevalent in the tests.

Several problems are also given in the long answer type or short answer type in the examinations. These CBSE Class 9 Science additional questions are based on the most recent CBSE curriculum. Having these CBSE 9th Class Science additional questions in hand and studying them regularly will certainly pay off.

### Chapter-wise questions

Extramarks provides a series of extra questions, which can be easily accessed on the official website. Some of the chapter-wise extra questions that you must practice are as follows –

### Matter in Our Surroundings Class 9 Extra Questions

In this chapter, we are going to deal with questions of “matter”, types of matter, states, and various other points related to this.

Some of the extra questions that you can practice are as follows:

1. Define density and provide an SI unit for it.
2. What is the definition of latent heat of vaporisation?
4. When the temperature rises, what happens to the rate of diffusion?
5. Describe the reaction that occurs when a drop of dettol is put in water.
6. When it comes to gases, why do they cause more pressure on the container’s walls than solids?
7. A glass filled with ice cold water appears to have water droplets on the outside. Why does this happen?
8. There is no increase in volume when 50 g of sugar is dissolved in 100 mL of water. What property of matter is highlighted by this assessment?

### Is Matter Around Us Pure Class 9 Extra Questions

In this chapter, we will see questions related to compounds and mixtures. We will also see questions from the NCERT exemplar. Some of the extra questions that you can practice are as follows:

1. What exactly is the saturated solution?
2. How can you dilute or concentrate on a solution?
3. Why is water considered as a universal solvent?
4. Which factors determine whether a solution is diluted, concentrated, or saturated?
5. How can a saturated solution be converted to an unsaturated solution without adding extra solvent?
6. Sucrose (sugar) crystals derived from sugarcane and beetroot are combined. Is it going to be a pure material or a mixture? Give justifications for your reasoning.

### Atoms and Molecules Class 9 Extra Questions

In this chapter, we will see questions related to atomic mass, mole, formulas of different compounds, etc. Visit the Extramarks websites to get more details. Some of the extra questions that you can practice are as follows:

1. ‘The formula of sucrose (C12H22O11) contradicts Dalton’s atomic theory.’ Explain this statement.
2. Distinguish between a molecule’s real mass and its gram molecular mass.
3. Determine the sodium carbonate formula mass (Na2CO3.10H2O).
4. What is the definition of the law of mass conservation?
5. What is atomicity? Find the atomicity of nitrogen?
6. How many atoms are in a black dot drawn on paper with a graphite pencil as a full stop at the conclusion of a sentence?
7. Ionic and molecular substances are what they sound like. Give some instances.

### Structure of the Atom Class 9 Extra Questions

In this chapter structure of the atom, we will provide extra questions for class 9 of NCERT and previous year’s CBSE questions. This chapter deals with questions related to atoms and  electrons, protons, and neutrons. Some of the extra questions that you can practice are as follows:

1. Which subatomic particle is not present in a typical hydrogen atom?
2. Is it possible for an element’s atom to contain one electron, one proton, and no neutron? If so, give the element a name.
3. Electrons have a negative charge, while protons have a positive charge. An atom possesses both, then why is there no charge?
4. Give the unit for measuring atom size and the size of a hydrogen atom?
5. What are the Latin names for sodium, potassium, gold and mercury?

### The Fundamental Unit of Life Class 9 Extra Questions

The following chapter questions are related to organisms, cells, different parts of the cell, etc. Some of the extra questions that you can practice are as follows:

1. What  is a hypotonic solution?
2. Give a specific example of a multicellular organism.
3. Name two structures that are only found in plant cells and not in animal cells.
4. Which organelle is responsible for the production of lysosomes?
5. What is the name of the plant cell’s outermost layer?
6. Why is a light microscope referred to as a compound microscope?
7. Which organelle acts as a channel for material transit between the cytoplasm and the nucleus?

### Tissues Class 9 Extra Questions

In this chapter, questions are related to different types of tissues like plant tissue and animal tissue. Through these extra questions, you can practice a lot for your CBSE Board examination. Some of the extra questions that you can practice are as follows:

1. Name the water-conducting tissue found in gymnosperms.
2. Which tissue in plants allows them to be flexible?
3. Which animal tissue aids in tissue healing and fills the space within the organ?
4. What cells are in charge of contraction and relaxation movements?
5. Which structure defends the plant’s body against parasitic invasion?
6. What are the ingredients in phloem?
7. What is the purpose of Cuboidal Epithelium?

### Diversity in Living Organisms Class 9 Extra Questions

In this chapter questions are related to classification, different types of kingdoms like plant kingdom, animal kingdom and some concepts related to evolution. We provide Diversity in living organism Class 9 Extra Questions Science in this chapter. NCERT and CBSE previous year Extra Questions for Class 9 Science Chapter Diversity in living organisms can help you to improve your CBSE Board Exam results. Through these extra questions, you can practice a lot for your CBSE Board examination. Some of the extra questions that you can practice are as follows:

1. What does biological categorisation address?
2. Who was the first to categorise animals based on their habitats?
3. Which plant has a lifespan of over a thousand years?
4. Who initially proposed the concept of evolution in the book ‘Origin of Species’?
5. Name a coelenterate that lives alone and is prevalent in freshwater ponds.

### Why Do We Fall Ill Class 9 Extra Questions

In this chapter, we will see questions related to disease, different types of disease, treatment of disease, etc. Some of the extra questions that you can practice are as follows:

1. What exactly is community health?
2. What exactly are communicable diseases?
3. What are the distinctions between chronic and acute disease?
4. What do you mean by disease symptoms?
5. What is the source of an infectious agent?

### Motion Class 9 Extra Questions

This is a chapter of physics in which questions are related to motion (like distance, speed, velocity, etc.), types of motion, and different formulas of motion. We provide Motion Class 9 Extra Questions Science in this chapter. Your CBSE Board Exam results can be improved by using NCERT and CBSE previous year’s Extra Questions for Class 9 Science Chapter Motion. Through these extra questions, you can practice a lot for your CBSE Board examination.

Some of the extra questions that you can practice are as follows:

1. Is it possible for a body to have a constant speed yet a fluctuating velocity?
2. Is it possible to accelerate homogeneous linear motion?
3. What causes the earth’s rotation?
4. What is required to describe an object’s position?
5. Give an example of how we might infer motion indirectly.
6. Two scientists established a solid scientific foundation for the phenomena of motion. Write their names down.
7. Is it essential for a body’s displacement to be zero in order for its distance to be zero?
8. When do the magnitudes of a moving object’s distance and displacement coincide?

### Force and Laws of Motion Class 9 Extra Questions

In this Force and laws of motion chapter, we will provide extra questions for class 9 of NCERT and previous year’s CBSE questions. In this chapter, questions are mainly about force (balanced and unbalanced force) and laws of motion (inertia, momentum, etc.) .

Some of the extra questions that you can practice are as follows:

1. What exactly is balanced force?
2. What is the second law of motion according to Newton?
3. Which law of motion determines the magnitude of force?
4. What exactly do you mean by “impact force”?
5. What are the two most important consequences that a force can have on a body?
6. What is the factor that determines the body’s inertia?
7. What determines an object’s rate of change of momentum?
8. Explain the distinctions in balanced and unbalanced force.

### Gravitation Class 9 Extra Questions

This chapter mainly deals with questions of Gravitational laws, gravitational force, different types of force, mass, weight, density, acceleration, acceleration due to gravity, constants, Buoyant force, density, relative density, etc. Some of the extra questions that you can practice are as follows:

1. Who came up with the universal law of gravitation?
2. What is the mass of a body on the moon if its mass on Earth is 9.8 kg?
3. What happens to the gravitational force between two bodies if one of their masses is doubled?
4. Why can one leap higher on the moon’s surface than on Earth’s?
5. Why is swimming in the sea simpler than swimming in the river?
6. Why is the dam reservoir bottom wall thicker?
7. What is the initial velocity of a body when it is dropped from a great height?

### Work, Power, And Energy Class 9 Extra Questions

In this chapter, questions are related to energy, types of energy, kinetic energy, conservation of energy, work, work done, etc. Some of the extra questions that you can practice are as follows:

1. What exactly is negative work?
2. A girl runs in a circular pattern at a constant speed. How much word does the female do?
3. How much work is done by a guy pounding a hard wall with a force of 400 N?
4. What are the two most frequent types of mechanical energy?
5. By what factor does its kinetic energy increase when a body’s speed is doubled?
6. When a body’s speed is twice, by what factor does its kinetic energy increase?
7. When a body moves horizontally along a frictionless surface, how much effort is done against gravity?
8. Describe the type of energy possessed by a runner.

### Sound Class 9 Extra Questions

In this chapter, we will get extra questions related to waves, different types of waves, wavelength, frequency, etc. Some of the extra questions that you can practice are as follows:

1. What exactly are mechanical waves?
2. What is the relationship between time and frequency?
3. What factors influence the pitch of a sound?
4. Give the names of two creatures that communicate through infrared.
5. What kind of wave is a soundwave?
6. Why is a sound wave referred to as a longitudinal wave?
7. Define the wave’s time period?
8. Certain things influence the pitch of sound. Describe those elements.

### Natural Resources Class 9 Extra Questions

In this chapter, questions are related to resources available on earth, the biosphere, carbon compounds, and many more. Some of the extra questions that you can practice are as follows:

1. What are the two primary causes of natural resource over-exploitation?
2. In which zone of the atmosphere the ozone layer exists?
3. Identify the mechanisms that contribute to the balance of oxygen and carbon dioxide in the environment.
4. What effect does oxygen have on nitrogen fixation?
5. Which plant group has nitrogen-fixing bacteria in its root nodules?

### Improvement in Food Resources Class 9 Extra Questions

Questions are mainly related to types of breeding, selection and quality improvement, crops and its protection from pests and diseases, and organic farming etc. Some of the extra questions that you can practice are as follows:

1. What has the white revolution resulted in?
2. What should we do to ensure a stable income?
3. What do photoperiods have in common?
4. What exactly is animal husbandry?
5. What distinguishes intercropping from mixed cropping?
6. Can you name two foods that give us carbohydrates?