CREST Science Olympiad Class 8 Previous Year Papers

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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.2

Q.3

Q.4

Q.5

Q.6

Q.7

Q.8

Q.9

Q.10

Q.1	Arrange the different types of coal in the decreasing order of the quality of coal: (1) Lignite (2) Peat (3) Anthracite (4) Bituminous
	a) 3, 4, 1, 2		b) 4, 2, 3, 1
	c) 2, 1, 4, 3		d) 2, 3, 4, 1

Q.2	Ron placed an object at a distance 2 m from a plane mirror. He then shifted the object 0.5 m away from the mirror. What is the distance between the object and its image?
	a) 2 m		b) 1.5 m
	c) 5 m		d) 3 m

Q.3	Identify the element as per the following statement: An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water.
	a) Calcium		b) Carbon
	c) Silicon		d) Iron

Q.4	In the following question, an assertion and reason are given. Choose the correct option: Assertion: Fungi are a large group of organisms which do not photosynthesise. Reason: All fungi are generally made up of fine threads called hyphae.
	a) Both assertion and reason are true and reason is the correct explanation for the assertion		b) Both assertion and reason are true but reason is not the correct explanation for the assertion
	c) Assertion is true but reason is false		d) Assertion is false but reason is true

Q.5	Fill in the blank: A duster rests on a table, exerting a downward force on the table. The reaction to this force is _____________.
	a) the force of Earth on the duster		b) the force of the table on the duster
	c) the force of Earth on the table		d) the inertia of the duster

Q.6	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.7	Four classmates were having a discussion about the correct way for sowing seeds. This is what they said: Richard: Seeds should be sown at right intervals. Susan: Seeds should be sown at the right depth. David: Seeds should be sown in dry soil. Jacob: Seeds should not be sown in highly wet soil. Which of them was/were incorrect?
	a) Only Jacob		b) Only David
	c) Both Susan and Richard		d) Both David and Susan

Q.8	Fill in the blank: To a small quantity of X, few drops of HCl are added. Consequently, colourless, odourless gas is produced. This gas on passing through lime water turns it milky proving the presence of ____________ of X.
	a) carbonate		b) bicarbonate
	c) carbide		d) either carbonate or bicarbonate

Q.9	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.10	In the following question, an assertion and a reason are given. Choose the correct option: Assertion: The forces acting on a body can be replaced by the resultant force only as regards the motion of the body as a whole. Reason: The resultant force cannot replace the several forces acting on a body in other respects.
	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) Assertion is CORRECT, but reason is INCORRECT		d) Assertion is INCORRECT, but reason is CORRECT

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Students can download the CREST Science Olympiad previous year paper pdf for class 8 from this page. Each question in the paper carries 1 mark. The answer key for all the questions is also provided on the last page.

One of the most significant advantages of solving the past years’ papers is that it helps students improve their time management skills, strengthens their understanding of concepts and aids them in applying the concepts they have mastered. Also, solving previous years’ papers a few days before the exam can help students to revise the concepts quickly. Therefore, students must refer to previous years' papers before appearing for the final exam as many advantages are associated with it.

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.