CBSE Class 9 Science Sample Paper Set 2 — Free PDF
This sample paper covers all key topics in Class 9 Science including motion, forces, matter, atoms, and life processes. Practice comprehensive questions de
TL;DR: This sample paper covers all key topics in Class 9 Science including motion, forces, matter, atoms, and life processes. Practice comprehensive questio…
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This sample paper covers all key topics in Class 9 Science including motion, forces, matter, atoms, and life processes. Practice comprehensive questions designed to build conceptual understanding and exam readiness. This is a shortened practice set: 38 questions worth 73 marks, following the 80-mark CBSE paper pattern. Use it for timed practice, not as a full-length mock.
Board: CBSE · Class: Class 9 · Subject: Science · Total: 73 marks · Time: 3 hours
Section A - Objective Type Questions — 20 marks
Attempt all questions. Each question carries 1 mark.
Q1. What is the SI unit of velocity? (1 mark)
Answer: m/s
Q2. Newtons first law of motion is also called? (1 mark)
Answer: Law of Inertia
Q3. What is the SI unit of mass? (1 mark)
Answer: Kilogram (kg)
Q4. The smallest particle of an element is? (1 mark)
Answer: Atom
Q5. What is the main constituent of air? (1 mark)
Answer: Nitrogen (78%)
Q6. The process by which plants absorb water is called? (1 mark)
Answer: Osmosis
Q7. What is the SI unit of acceleration? (1 mark)
Answer: m/s^2
Q8. Which scientist proposed the atomic theory? (1 mark)
Answer: John Dalton
Q9. The basic unit of life is? (1 mark)
Answer: Cell
Q10. What is the valency of Carbon? (1 mark)
Answer: 4
Q11. The element with atomic number 8 is? (1 mark)
Answer: Oxygen
Q12. What are the three states of matter? (1 mark)
Answer: Solid, Liquid, Gas
Q13. The SI unit of force is? (1 mark)
Answer: Newton
Q14. Which organelle is called the powerhouse of the cell? (1 mark)
Answer: Mitochondria
Q15. What is the density of water at 4 degrees Celsius? (1 mark)
Answer: 1 g/cm^3 or 1000 kg/m^3
Q16. The process of breaking down of food into simpler substances is? (1 mark)
Answer: Digestion
Q17. What is the molecular weight of CO2? (1 mark)
Answer: 44 amu
Q18. The tissue responsible for transport of water in plants is? (1 mark)
Answer: Xylem
Q19. Distance covered per unit time is? (1 mark)
Answer: Speed
Q20. The phenomenon of change in velocity is? (1 mark)
Answer: Acceleration
Section B - Short Answer Questions — 27 marks
Attempt all questions. Each question carries 2 or 3 marks.
Q1. State and explain Newtons second law of motion with mathematical form. (2 marks)
Answer: F = ma where Force equals mass times acceleration
Q2. What is the difference between average speed and average velocity? (2 marks)
Answer: Speed is distance/time, Velocity is displacement/time (vector quantity)
Q3. Define relative atomic mass and write its importance. (3 marks)
Answer: Mass of atom compared to 1/12th of Carbon-12, used for comparing atomic masses
Q4. What is the structure of an atom? Draw a diagram. (3 marks)
Answer: Nucleus with protons and neutrons at center, electrons orbiting in shells
Q5. Explain the process of osmosis with example. (2 marks)
Answer: Movement of solvent through semipermeable membrane from low to high solute concentration, example: plant root absorbing water
Q6. What are the types of tissues in plants? Name them. (2 marks)
Answer: Meristematic and Permanent tissues
Q7. Calculate the acceleration of a car if it travels 50m in 5s starting from rest. (2 marks)
Answer: a = 4 m/s^2
Q8. What are isotopes? Give one example. (2 marks)
Answer: Atoms of same element with different mass numbers, example: Carbon-12 and Carbon-14
Q9. Describe the structure of a plant cell with functions of all organelles. (3 marks)
Answer: Cell wall (protection), Chloroplasts (photosynthesis), Vacuole (storage), Nucleus (control)
Q10. What is a balanced chemical equation? Give one example. (2 marks)
Answer: Equal number of atoms on both sides, example: 2H2 + O2 -> 2H2O
Q11. Explain the difference between pure substances and mixtures. (2 marks)
Answer: Pure substances have fixed composition, mixtures have variable composition
Q12. What is the function of the circulatory system in humans? (2 marks)
Answer: Transport of oxygen, nutrients, and hormones throughout the body
Section C - Long Answer Questions — 26 marks
Attempt all questions. Each question carries 3 or 5 marks.
Q1. Draw a diagram of human circulatory system and explain the path of blood circulation. (5 marks)
Answer: Right atrium -> Right ventricle -> Lungs -> Left atrium -> Left ventricle -> Body -> Back to Right atrium
Q2. Explain the structure of a plant cell and compare it with animal cell. (5 marks)
Answer: Plant cell has cell wall, chloroplasts, large vacuole; Animal cell lacks these and has centrosomes
Q3. Describe the process of photosynthesis with equation. (5 marks)
Answer: 6CO2 + 6H2O + Light -> C6H12O6 + 6O2, occurs in chloroplasts
Q4. Explain the laws of motion with real-life examples. (5 marks)
Answer: First law: inertia (seatbelts in cars), Second law: F=ma (accelerating car), Third law: action-reaction (rocket propulsion)
Q5. What is the atomic structure of Sodium? Write the electron configuration. (3 marks)
Answer: 11 electrons, configuration: 2,8,1
Q6. Explain the water cycle and its importance for life on Earth. (3 marks)
Answer: Evaporation, Condensation, Precipitation, Collection - distributes water and regulates climate
FAQs
What is the exam pattern for Class 9 Science?
The exam is 80 marks with 3 hours duration, covering sections on physics, chemistry, biology with objective, short answer, and long answer questions.
How many chapters are there in Class 9 Science?
There are 15 chapters covering topics like motion, forces, matter, atoms, cell structure, tissues, and life processes.
What are the important topics to focus on?
Focus on motion and forces, structure of atom, cell biology, photosynthesis and respiration, and human body systems.
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