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	A ray of light strikes a silvered surface inclined to another one at an angle of 90o. Then the reflected ray will turn through __________.
	a) 0o		b) 45o
	c) 90o		d) 180o

Q.2	Not all the planets spin on their axis in the same direction, as they go around the Sun. On which planet would you see the sun rise in the west and set in the east?
	a) Mars		b) Venus
	c) Mercury		d) Neptune

Q.3	Which of the following is an incorrect statement?
	a) Velocity of sound is least in solids.		b) When sound travels through air, the temperature of air is constant.
	c) When sound travels through air, the air molecules vibrate longitudinally.		d) Under similar conditions of temperature and pressure, the velocity of sound is greater than that in oxygen.

Q.4	Fill in the blank: Bronze statues and articles of copper slowly tarnish in air and turn green. This green colour is due to the formation of ___________.
	a) copper carbonate		b) an oxalate
	c) copper sulphate		d) copper oxide

Q.5	Which of the following is/are the correct statement(s)? Alloyed iron is more durable. Alloyed iron is more shining. Alloyed iron is more prone to rusting. Rust is loosely attached to the metal surface.
	a) Only 1		b) Only 3
	c) Only 2 and 4		d) 1, 2 and 4

Q.6	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.

Q.7	Which of the following statements is/are correct about ploughing?
	a) It facilitates deeper penetration of soil.		b) It maintains the fertility of the soil.
	c) It helps in enriching the mixing of organic matter and nutrients evenly.		d) All of these

Q.8	Consider the following statements about the placenta and choose the correct option: (i) It is an intimate connection between fetal membrane and uterine wall. (ii) Fetal blood comes very close to the maternal blood in the placenta. (iii) Fetus gets nutrients, oxygen, etc. from the maternal blood through the placenta and gives off wastes, CO2 etc.
	a) Only (ii) correct		b) Only (i) and (ii) are correct
	c) Only (iii) is correct		d) All of them are correct

Q.9	The diagram shows the process of purification of copper metal. A thick copper plate A of impure copper and a thin pure copper plate B are immersed in a metal sulphate solution and an electric current is passed through it. 1. Which electrode is connected to the negative terminal of the battery? 2. What is liberated at the cathode?
	a) 1-Impure copper 2-Pure copper		b) 1-Pure copper 2-Pure copper
	c) 1-Pure copper 2-Impure copper		d) 1-Impure copper 2-Impure copper

Q.10	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

Your Score: 0/10

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.