Sample Science Question Paper for Class 9

Question paper for Science class 9 is a comprehensive assessment tool designed to evaluate students' understanding and knowledge in various scientific concepts. It covers a wide range of topics including physics, chemistry, and biology. Here is a sample science question paper for class 9:

Section A: Physics
1. Define the term 'force' and give two examples.
2. State Newton's first law of motion and explain it with an example.
3. What is the difference between speed and velocity? Explain with examples.
4. Describe the principle of conservation of energy.
5. Differentiate between potential energy and kinetic energy.

Section B: Chemistry
1. Define the term 'chemical reaction' and give two examples.
2. What is the importance of balanced chemical equations? Explain with an example.
3. Explain the process of rusting. How can it be prevented?
4. Differentiate between acids and bases. Give two examples of each.
5. Describe the properties and uses of metals and non-metals.

Section C: Biology
1. Define the term 'cell' and explain its structure.
2. Explain the process of photosynthesis. Why is it important for the survival of plants?
3. What is the difference between aerobic and anaerobic respiration? Give examples of each.
4. Describe the functions of the digestive system in humans.
5. Explain the process of reproduction in plants.

Section D: Multiple Choice Questions
1. The SI unit of force is:
a) Newton
b) Kilogram
c) Joule
d) Watt
2. The process of conversion of water into vapor is called:
a) Evaporation
b) Condensation
c) Sublimation
d) Melting
3. Which gas is responsible for the greenhouse effect?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen

Section E: Short Answer Questions
1. What are the three states of matter? Give examples of each.
2. Explain the concept of buoyancy and how it affects the floating and sinking of objects.
3. Describe the process of mitosis and its significance.
4. Explain the structure and function of the respiratory system in humans.
5. What is the role of DNA in inheritance?

Remember to attempt all the questions and manage your time wisely. Good luck with your exam preparation!

(Note: The above question paper is a sample and may not reflect the actual question paper of your class 9 science exam. It is always recommended to refer to the official curriculum and past papers for accurate preparation.)