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

Q.1

Q.2

Q.3

Q.4

Q.5

Q.6

Q.7

Q.8

Q.9

Q.10

Q.1	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.2	Four students made the following statements about the metals: Robert: Metals are malleable. Arya: All metal oxides are acidic in nature. James: Metals have lustre. Peter: Metal atoms have 1, 2 or 3 electrons in the outermost shell. Which among them spoke incorrectly?
	a) Only Robert		b) Only Arya
	c) Both James and Arya		d) Both James and Peter

Q.3	In heavy vehicles, diesel is used as a fuel. Which of the following could be the reason for this?
	a) It has more mileage and is safe for the engine.		b) It is less costly and useful in fuel savings.
	c) It has high power and is convenient.		d) It is cheaper in comparison to petrol.

Q.4	Which of the following problem is not related to our environment?
	a) Afforestation		b) Ocean acidification
	c) Invasive species		d) Desertification

Q.5	The sound produced by a tuning fork travel from air to glass. Which of the following physical quantities remains the same? Velocity Frequency Wavelength Amplitude
	a) Only 1		b) Only 2
	c) Both 1 and 3		d) Both 2 and 4

Q.6	Different microorganisms taking part in the nitrogen cycle are: (i) Rhizobium in roots (ii) Ammonifying bacteria (iii) Nitrifying bacteria (iv) Denitrifying bacteria Which of them strictly work under anaerobic conditions?
	a) Only iv		b) i and iv
	c) i, ii and iv		d) ii and iv

Q.7	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.8	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.9	James noticed that a flame produced by burning wood is orange-yellow, while a Bunsen burner flame is blue. What is the primary reason for this difference in flame colour?
	a) Wood releases different gases, causing a coloured flame.		b) The temperature of the flame determines its colour.
	c) The presence of impurities in wood affects the flame colour.		d) The combustion of different materials produces varying flame colours.

Q.10	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

Your Score: 0/10

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.