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	In the following question, an assertion and a reason are given. Choose the correct option: Assertion: Sound waves cannot pass through the vacuum. Reason: Sound waves are mechanical waves, which require a medium for their propagation.
	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

Q.2	Choose the correct option and complete the following sentence: When the distance between the object and the plane mirror increases ______________.
	a) the image remains same		b) the size of the image will become less than the size of the object
	c) the distance between the image and the plane mirror increases		d) the distance between the image and the plane mirror decreases

Q.3	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.4	Consider the following statements and choose the correct option: Statement 1: Mars is also called morning star or evening star. Statement 2: Jupiter has the largest satellite.
	a) Statement 1 is correct and statement 2 is incorrect		b) Statement 1 is incorrect and statement 2 is correct
	c) Both the statements are correct		d) Both the statements are incorrect

Q.5	The speed of sound in air and sea-water are given to be 340 m/s and 1440 m/s respectively. A ship sends a strong signal straight down and detects its echo after 1.5 secs. What is the depth of the sea at that point?
	a) 2.16 km		b) 1.08 km
	c) 0.51 km		d) 0.255 km

Q.6	Match List I (Fuel gases) with List II (Major constituents) and select the correct answer using the codes given below: List I (Fuel Gas) List II (Major Constituent) A. CNG 1. Carbon monoxide, hydrogen B. Coal gas 2. Butane, propane C. LPG 3. Methane, ethane D. Water gas 4. Hydrogen, methane, carbon monoxide
	a) A-2, B-1, C-3, D-4		b) A-3, B-4, C-2, D-1
	c) A-2, B-4, C-3, D-1		d) A-3, B-1, C-2, D-3

Q.7	What happens when two bodies are rubbed against each other?
	a) They acquire equal and similar charges.		b) They acquire equal and opposite charges.
	c) They acquire different charges but in different amounts depending upon their masses.		d) They do not acquire any charge.

Q.8	In the following question, an assertion and a reason are given. Choose the correct option: Assertion: A normal human eye can clearly see all the objects at a different distance. Reason: The human eye has the capacity to suitably adjust the focal length of its lens to a certain extent.
	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 the reason is INCORRECT		d) Both assertion and reason are CORRECT

Q.9	A book rests on a horizontal frictionless surface. A horizontal force of magnitude F is applied. This force produces an acceleration:
	a) Only if F is larger than the weight of the book		b) Only while the book suddenly changes from rest to motion
	c) Always		d) Only if the inertia of the book decreases

Q.10	A boy runs his toy car on a dry marble floor, wet marble floor, newspaper and towel spread on the floor. The force of friction acting on the car on different surfaces in increasing order will be:
	a) Wet marble floor < Dry marble floor < Towel < Newspaper		b) Newspaper < Towel < Dry marble floor < Wet marble floor
	c) Towel < Newspaper < Dry marble floor < Wet marble floor		d) Wet marble floor < Dry marble floor < Newspaper < Towel

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.