ISC Important Questions For Class 11

ISC Class 11 Important Questions

Class 11 is one of the most important classes in a student’s academic life, laying the foundation for class 12. Although the marks you score in class 11 may not be counted, the syllabus covered in this class is essential. Almost every competitive exam, including BITSAT, JEE Main, JEE Advanced and others, has a significant portion of the syllabus based on class 11.

Moreover, many chapters in class 11 are linked to chapters in class 12. For example, you won’t be able to understand the probability chapter in class 12 mathematics until you’ve mastered the permutation-combination and binomial theorem chapters in class 11. It is important to understand the concepts of class 11 and revise them well to score good marks in class 12.

Students appearing for Class 11 examination should refer to the important questions given below:

ISC Class 11 Biology Important Questions

Q1. Draw a well-labeled diagram of electron microscopic structure of chloroplast.

Q2. Make a well-labeled diagram of a eukaryotic cell’s electron microscopic structure.

Q3. Explain in brief the experiment that illustrates the downwards transport of organic solutes through the phloem.

Q4. Explain the role of phosphorus and nitrogen in plants.

Q5. Draw a neat and well-labeled diagram of electron microscopic structure of TS of cilia.

Q6. Mention and explain the three major factors that affect the imbibition process.

Q7. Explain in detail the process of urine formation in the human body.

Q8. Mention any four differences between meiosis and mitosis.

Q9. Mention any four differences between Eukaryotic Cells and Prokaryotic Cells.

Q10. Explain the process of Double Circulation.

Q11. Differentiate between different types of neurons based on their polarity.

Q12. Write a short note on the chemical changes that occur when a muscle contracts.

ISC Class 11 Chemistry Important Questions

Q1. Write the definition of Heat of Neutralisation.

Q2. Calculate the pH value of 0.01M CH3COOH if it is dissociated by 5%.

Q3. What is the requirement for spontaneity in terms of free energy change?

Q4. Give an explanation for-

  • Alkynes and Alkanes don’t give geometrical isomerism
  • The Baeyer’s reagent’s color is discharged when it is treated with an alkene

Q5. Give balanced equations to convert the following:

  • Benzene to Toluene
  • Sodium Acetate to Methane
  • Ethane to Butane

Q6. Explain Graphite and Diamond structures and write briefly about their hardness based on their structures.

Q7. Calculate the molecular weight of the gas that measures 280 ml at 305 K and 750 mm of Hg, weighing 0.344 g. 

Q8. Convert the following chemical substances-

  • Propene to 2 – bromopropane
  • Ethyl alcohol to ethene

Q9. Identify which alkene on reductive ozonolysis gives only:

  • Propanone 
  • Ethanal

Q10. Mention why alkali metals are used as reducing agents?

Q11. Mention an alkaline earth metal that shows a diagonal relationship with aluminum.

Q12. Which gas is produced on dehydrohalogenation of ethyl iodide?

Q13. Mention the temperature at which the entropy of a perfectly crystalline substance is taken as zero?

ISC Class 11 Physics Important Questions

Q1. Explain the term Absolute Error.

Q2. Round off the number 3.7846 up to 3 significant figures.

Q3. Write a short note on the Principle of Continuity of fluids.

Q4. Write a short note on the First Law of thermodynamics.

Q5. What will be the displacement of a bullet fired vertically upward and falls at the same place after some time?

Q6. A man with a mass of 60 kg lifts a 50 kg box to a height of 5m. Calculate the work done by the man.

Q7. Define the term Orbital Velocity.

Q8. A shot fired from a cannon explodes in the air. Explain the changes in the momentum and the kinetic energy?

Q9. How much water can a pump motor of 9.8KW lift to a height of 5 meters in one minute?

Q10. What are the dimensions of Boltz Mann’s constant?

Q11. Explain the terms – Strain and Stress with respect to their elasticity.

Q12. Explain the relation between the pressure and the kinetic energy per unit volume of a gas.