CREST Science Olympiad Class 9 Previous Year Paper

Preparing for the Class 9 Science Olympiad can feel challenging, but using previous year question papers makes a big difference. These papers give students a solid understanding of how questions are framed and what topics to focus on, making revision more targeted.

How These Papers Help

• They cover crucial topics such as Motion, Force and Laws of Motion, Gravitation, Work and Energy, Sound etc.
• They improve time management, analytical thinking, and help students handle tricky questions more confidently.
• Answer keys are included to help students review and strengthen weak areas.

Download the Science Olympiad Previous Year Paper for Class 9 (PDF) to support focused revision and help your child step into the exam feeling well-prepared and motivated.

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Syllabus:

Section 1: Motion, Force and Laws of Motion, Gravitation, Work and Energy, Sound, Matter in Our Surroundings, Is Matter Around Us Pure, Atoms and Molecules, Structure of Atom, Cell - The Fundamental Unit of Life, Tissues, Diversity in Living Organisms, Why Do We Fall Ill, Natural Resources, Improvement in Food Resources.

Achievers Section: Higher Order Thinking Questions - Syllabus as per Section 1

Sample Paper Previous Year Paper Marking Scheme Free Study Material

Previous Year Questions

Q.1

Q.2

Q.3

Q.4

Q.5

Q.6

Q.7

Q.8

Q.9

Q.10

Q.1	A mixture of gases with a pressure of 800 mm Hg contains 10% oxygen and 90% nitrogen by volume. What is the partial pressure of the oxygen gas in the mixture?
	a) 10 mm Hg		b) 80 mm Hg
	c) 700 mm Hg		d) 800 mm Hg

Q.2	If different planets have the same density but different radii, then the acceleration due to gravity on the surface of the planet is related to the radius (R) of the planet as:
	a) g ∝ 1/R2		b) g ∝ 1/R
	c) g ∝ R		d) g ∝ R2

Q.3	In the following question, an assertion and a reason is given. Choose the correct option: Assertion: AIDS is not syndrome which results from infection through bacteria. Reason: AIDS is not transmitted through contact with saliva, breast milk and vaginal secretions of an infected individual.
	a) Both assertion and reason are true and reason is the correct explanation of assertion.		b) Both assertion and reason are true and reason is not the correct explanation of assertion.
	c) Assertion is true but reason is false.		d) Both assertion and reason are false.

Q.4	Which of the following statements is/are incorrect?  I. Permanent tissue loses its capacity of cell division. II. A meristem is a group of cell that divides continually to form a new cell. III. Companion cells are usually seen associated with the sieve tube.
	a) I and II		b) II and III
	c) I, II and III		d) None of them is incorrect

Q.5	In the following question, an assertion and a reason are given. Choose the correct option: Assertion: A mixture of hydrogen and sulphur dioxide gas can be separated using a method of diffusion. Reason: Diffusion is a method of separation by which two gases with greater difference in their densities are separated.
	a) Both assertion and reason are CORRECT and reason is the CORRECT explanation of the assertion.		b) Both assertion and reason are CORRECT, but reason is NOT THE CORRECT explanation of the assertion.
	c) Both assertion and reason are INCORRECT.		d) Both assertion and reason are CORRECT.

Q.6	Which of the following electronic configurations is/are correct?
	a) Ne = 2, 8		b) P = 2, 8, 5
	c) Cl = 2, 8, 6		d) Both a and b

Q.7	Which of the statements given below are correct about a tissue? I. Epithelium tissue forms a protective layer of the body. II. Transmission of stimuli from one part of the body to other part takes place through nervous tissue. III. Blood is an example of tissue.
	a) I and II		b) II and III
	c) I and III		d) I, II and III

Q.8	A piece of paper and a cricket ball are dropped from the same height. Under which of the following conditions do both reach the surface simultaneously?
	a) They must have the same volume.		b) They must have the same density.
	c) They must have the same mass.		d) They must be dropped in a vacuum.

Q.9	In the following question, an assertion and reason are given. Choose the correct option: Assertion: Intercropping checks the population of insects. Reason: Plant pests can be controlled biologically by their natural parasites and pathogens.
	a) Both assertion and reason are true and reason is the correct explanation of assertion.		b) Both assertion and reason are true but reason is not the correct explanation of assertion.
	c) Assertion is true but reason is false.		d) Both assertion and reason are false.

Q.10	The distance between 2nd crest and 6th trough of a wave shown below is 24 cm. If the wave velocity of the moving crests is 20 m s-1, then the frequency of rocking of the boat is:
	a) 24 Hz		b) 20 Hz
	c) 375 Hz		d) 240 Hz

Your Score: 0/10

Additional Preparation Resources

Students can also refer to the following resources to level up their CREST Science Olympiad (CSO) exam preparation for class 9 -

1. CREST Science Worksheets Package for class 9 - It is a package of 5 worksheets. The worksheets are in the same pattern as the previous year paper. Hence, very useful for preparation. Existing users can purchase additional practice worksheets by following these steps: Login at https://www.crestolympiads.com/login -> Dashboard -> Additional Practice -> Buy & new users can visit https://www.crestolympiads.com/registration
2. CREST Science Olympiad book for class 9 - The book covers topic-wise reading material, chapter-wise practice questions with answer key & contains the previous year paper. The book is available in both physical and pdf formats. Proceed now to purchase the Olympiad book. Also, students can view & download the first chapter of the Science Olympiad book for class 9 for free.

Note: Don’t forget to download the CREST Science Olympiad past year paper pdf for class 9.