CREST Science Olympiad Class 8 Previous Year Papers

Is your child preparing for the Class 8 Science Olympiad? One of the most effective ways to boost their preparation is by solving previous year question papers. These papers help students get familiar with the exam format and the types of questions they can expect.

Why Use Previous Year Papers?

• They include questions from key topics such as Crop Production and Management, Microorganisms, Synthetic Fibres and Plastics, Metals and Non-metals etc.
• They help students improve their accuracy, speed, and critical thinking skills.
• Answer keys are provided for self-evaluation and better understanding of concepts.

Download the Science Olympiad Previous Year Paper for Class 8 (PDF) to help your child revise more effectively and approach the exam with greater confidence.

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Syllabus:

Section 1: Crop Production and Management, Microorganisms, Synthetic Fibres and Plastics, Metals and Non-metals, Coal and Petroleum, Combustion and Flame, Conservation of Plants and Animals, Cell, Reproduction and Endocrine System, Force and Pressure, Friction, Sound, Chemical Effects of Electric Current, Some Natural Phenomena, Light, Stars and the Solar System, Pollution of Air and Water.

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

Sample Paper Previous Year Paper Marking Scheme Free Study Material

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Q.10

Q.1	Which of the following pairs cannot undergo displacement reaction?
	a) Iron sulphate solution and magnesium		b) Zinc sulphate solution and iron
	c) Zinc sulphate solution and calcium		d) Silver nitrate solution and copper

Q.2	Choose the correct option and complete the following sentence: A lightning conductor installed in a building ________________.
	a) does not allow the lightning to fall on the building		b) repels the lightning
	c) forces the lightning to fall in an area where there are no buildings		d) conducts electric charge to the ground when lightning strikes the building

Q.3	Consider the following statements about the physical and chemical properties of metals and choose the correct option: 1. All metals are ductile. 2. Generally metals are ductile. 3. Metals which are more reactive than hydrogen react with acids to release hydrogen gas. 4. All metals react with acids to release hydrogen gas.
	a) Only 1 and 2 are correct		b) Only 2 and 3 are correct
	c) 1, 2 and 3 correct		d) 1, 2, 3 and 4 are correct

Q.4	Stars twinkle but planets do not twinkle. Which of the following is the correct reason for the above-given statement?
	a) Stars emit their own light but planets receive light from the stars.		b) Stars do not form a part of the solar system.
	c) Stars form a point source of light while planets are considered as a collection of a large number of point sources of light.		d) During refraction of star light from the atmosphere, star light bends more towards the normal as compared to the planets.

Q.5	What happens when an impure copper rod is taken as the anode and the pure copper rod is taken as the cathode in an electrolysis experiment?
	a) The pure copper cathode decreases in size and the impure copper anode increases in size.		b) The pure copper cathode increases in size and the impure copper anode decreases in size.
	c) Both the pure copper cathode and impure copper anode increases in size.		d) None of these

Q.6	What happens in the following reaction? Fe2O3 + 3C → 2Fe + 3CO
	a) Fe undergoes oxidation and C undergoes reduction		b) Fe undergoes reduction and C undergoes oxidation
	c) Both Fe and C undergo reduction		d) Both Fe and C undergo oxidation

Q.7	Choose the correct option and complete the following sentence: The formation of sulphur trioxide from sulphur dioxide and oxygen is an ____________ reaction.
	a) endothermic as well as redox		b) endothermic as well as precipitation
	c) exothermic as well as redox		d) exothermic as well as precipitation

Q.8	Which of the following is correct definition of ignition temperature?
	a) The lowest temperature at which a substance catches fire spontaneously.		b) The lowest temperature at which a substance catches fire.
	c) The lowest temperature at which a substance changes its physical state.		d) The lowest temperature required for a chemical reaction to take place.

Q.9	In the given question, an assertion and a reason are given. Choose the correct option: Assertion: The temperature increases inside the fractionating column on going from the bottom to the top. Reason: The column is not heated at the bottom.
	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 the assertion.
	c) Assertion is correct, but reason is incorrect.		d) Both assertion and reason are incorrect.

Q.10	Which of the following statement(s) is not correct?
	a) In a plant cell, vacuoles are absent.		b) A vacuole is bounded by a single membrane.
	c) In Amoeba, contractile vacuole is important for excretion.		d) The flagellum is important for the transport of bacteria.

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Additional Preparation Resources

Students can also refer to the following resources to level up their CREST Science Olympiad (CSO) exam preparation for class 8 -

1. CREST Science Worksheets Package for class 8 - 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 8 - 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 8 for free.

Note: Don’t forget to download the CREST Science Olympiad past year paper pdf for class 8.