CREST Science Olympiad Class 8 Previous Year Paper

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

Previous Year Questions

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Q.10

Q.1	Identify the species (of plants and animals) which are found exclusively in a particular area:
	a) Epidemic species		b) Pelagic species
	c) Pandemic species		d) Endemic species

Q.2	Identify the correct order of reactivity of metals among the following:
	a) Zn < Cu < Fe < Al < Na		b) Fe < Zn < Cu < Na < Al
	c) Cu < Fe < Zn < Al < Na		d) Cu < Zn < Al < Na < Fe

Q.3	The friction between the two surfaces does not depend which of the following?
	a) The amount of surface area of the two objects which is in contact with each other.		b) The weight of the object which tends to move on the surface of another object.
	c) The degree of smoothness of the surface of two objects in contact with each other.		d) The degree of roughness of the surface of two objects in contact with each other.

Q.4	Which of the following statement is/are false? Cellulose is made up of glucose units. Weaving and knitting are two processes to get plastic. Plastics get corroded easily. Plastics are not polymers.
	a) Only 1		b) 2 and 3
	c) 1 and 3		d) 2, 3 and 4

Q.5	Choose the correct option and complete the following sentence: The method of zone refining of metals is based on the principle of _____________________.
	a) higher melting point of the impurity than that of the pure metal		b) greater mobility of the pure metal than that of the impurity
	c) greater solubility of the impurity in the molten state than in the solid		d) greater noble character of the solid metal than that of the impurity

Q.6	Consider the following clues about an element 'X': Clue 1: X is soft and can be cut easily with a knife. Clue 2: It is very reactive and cannot be kept open in the air. Clue 3: It reacts vigorously with water.  Identify 'X':
	a) Magnesium		b) Potassium
	c) Phosphorus		d) Aluminium

Q.7	Choose the right option to fill in the blanks below:  To electroplate an article with nickel requires a/an ______(i)______ which must be a solution containing ______(ii)_____ ions. The article to be plated is placed at the _____(iii)_____ of the cell in which the plating is carried out. The _____(iv)______ of the cell is made from pure nickel. The ions which are attracted to the negative electrode and discharged are called _____(v)______.
	a) (i)-electrolyte, (ii)-nickel, (iii)-cathode, (iv)-anode, (v)-cations		b) (i)-solute, (ii)-copper, (iii)-anode, (iv)-cathode, (v)-anions
	c) (i)-electrolyte, (ii)-nickel, (iii)-anode, (iv)-cathode, (v)-anions		d) (i)-solvent, (ii)-nickel, (iii)-anode, (iv)-cathode, (v)-cations

Q.8	Which of the following pair doesn't have the same dimensions?
	a) Force and pressure		b) Pressure and stress
	c) Impulse and momentum		d) Work and energy

Q.9	In the given question, an assertion and a reason are given. Choose the correct option: Assertion: It is better to use a sharp-tipped nail than a blunt nail. Reason: The tip with the smallest area produces a higher pressure when a small force is applied.
	a) Assertion and reason are true and reason is the correct explanation of the assertion		b) Assertion and reason are true, but reason is not the correct explanation of the assertion
	c) Assertion is true but reason is false		d) Both assertion and reason are false

Q.10	Stars twinkle but planets do not twinkle. Which of the following is the 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 starlight from the atmosphere, starlight bends more towards the normal as compared to the planets.

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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.