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	Which of the following shows the correct sequence (in the increasing order) of heat energy received per unit area from the Sun measured on Earth, Mars and Jupiter?
	a) Jupiter > Mars > Earth		b) Earth > Mars > Jupiter
	c) Jupiter > Earth > Mars		d) Earth > Jupiter > Mars

Q.2	Which one of the following is the correct sequence of the reactivity order of the elements?
	a) Cu > Mg > Zn > Na		b) Na > Zn > Mg > Cu
	c) Cu > Zn > Mg > Na		d) Na > Mg > Zn > Cu

Q.3	What happens when light emitted by a point source of light is passed through a prism?
	a) After dispersion, the emerging light would produce a pure spectrum on the screen.		b) After dispersion, the emerging light would produce an impure spectrum on the screen.
	c) After dispersion, the emerging light would produce a line spectrum on the screen.		d) None of these

Q.4	Fill in the blank: When an iron nail gets rusted, iron oxide is formed _____________.
	a) without any change in the weight of the nail		b) with increase in the weight of the nail
	c) with decrease in the weight of the nail		d) without any change in colour or weight of the nail

Q.5	Which of the following can lead to menstruation in a 21-year-old woman after ovulation? A. Sperms not available for fertilisation B. Oviducts blocked C. Sperms available for fertilisation D. Oviducts not blocked
	a) A and B		b) B and C
	c) A and D		d) C and D

Q.6	A force of 16 N is distributed uniformly on one surface of a cube of edge 4 m. Find the pressure on this surface:
	a) 1 Pa		b) 2 Pa
	c) 1/2 Pa		d) 3 Pa

Q.7	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.8	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.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	Identify the group(s) which contain all synthetic substances: P)  Nylon, Terylene, Wool Q)   Acrylic, Silk, Wool R)  Cotton, Polycot, Rayon S)  PVC, Polythene, Bakelite
	a) P only		b) Q only
	c) S only		d) Both P and S

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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.