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.

>>> Join CREST Olympiads WhatsApp Channel for latest updates. CREST Science Olympiad Previous Year Paper PDF for Class 9:

If your web browser doesn't have a PDF Plugin. Instead you can Click here to download the PDF

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	Read the following statements and choose the correct option: Statement 1: The presence of circulatory system is not the characteristic feature of protochordata. Statement 2: Rhizopus is the common 'black bread mould' fungus.
	a) Statement 1 is correct and statement 2 is incorrect		b) Statement 1 is incorrect and statement 2 is correct
	c) Both the statements are correct		d) Both the statements are incorrect

Q.2	Which of the following solutions will have the greatest concentration?
	a) 2 moles of solute dissolved in 1 liter of solution		b) 0.3 mole of solute dissolved in 0.6 liter of solution
	c) 2 moles of solute dissolved in 10 liters of solution		d) 0.1 mole of solute dissolved in 0.5 liter of solution

Q.3	Choose the correct option and complete the following sentence: Rohan lives in an overcrowded and poorly ventilated house, it is possible that he may suffer from the _________________ diseases.
	a) hereditary		b) congenital
	c) air borne		d) water borne

Q.4	Consider the following statements: I. Parenchyma tissue provides support to plant and also stores food. II. The flexibility in plants is due to collenchyma. III. Sclerenchyma makes the plant hard and stiff. Which of the statements given above are correct?
	a) I and II		b) I, II and III
	c) I and III		d) II and III

Q.5	Choose the correct option: The molecular formula Al2O3 means that ________________.
	a) a molecule contains 2 atoms of Al and 3 atoms of O		b) the ratio of the mass of Al to the mass of O in the molecule is 2 : 3
	c) they are twice as many Al atoms in the molecule as there are O atoms		d) the ratio of the mass of Al to the mass of O in the molecule is 3 : 2

Q.6	Which one of the following graphs represents uniform motion?
	a)		b)
	c)		d)

Q.7	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.8	Choose the correct option and complete the following sentence: Pollutant which reduces oxygen-carrying capacity of haemoglobin, leading to suffocation or death is ____________.
	a) carbon monoxide		b) sulphur dioxide
	c) ozone		d) nitric oxide

Q.9	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.10	Which of the statement(s) given below is/are correct? I. Aerenchyma tissues are found in hydrophytes. II. The number of stomata is less and sunken in xerophytes. III. Velamen tissues in orchids are found in the root.
	a) Only I		b) Only III
	c) Only II		d) I, II and III

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.