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: 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.2	Consider the following statements and choose the correct option: 1. Red blood cells do not have nuclei so they can move through blood vessels more efficiently. 2. Every person has a unique DNA that can be found in the cells' nuclei. 3. Only some plant cells have cell walls. 4. Sperm cells are produced by the male reproductive system while the egg cells are produced by the female reproductive system.
	a) Only 1 and 2 are correct		b) Only 1 and 3 are correct
	c) 1, 2 and 4 are correct		d) 1, 2, 3 and 4 are correct

Q.3	A man is standing not exactly at the centre of two walls. He fires a gun and hears the first echo after 1 s and the second echo after 2 s. If the speed of the sound is 330 m/s. What is the distance between the walls?
	a) 330 m		b) 360 m
	c) 420 m		d) 495 m

Q.4	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.5	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.6	Which factor is most directly responsible for determining how often a full moon appears?
	a) Size of the Moon		b) Size of the Earth
	c) How quickly the Moon orbits the Earth		d) How quickly the Moon turns on its axis

Q.7	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.8	Which of the following is the best explanation of the statement given below? Metabolism of glucose is considered as combustion.
	a) It involves reaction of glucose molecule with oxygen.		b) Products obtained are CO2 and H2O therefore it is a combustion reaction occurs at slow and steady rate.
	c) This reaction occur as rapid as combustion reaction.		d) This reaction release enormous amount of energy.

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	A box is pushed horizontally along a rough surface and constant acceleration is achieved. If the push is stopped, the box will _________.
	a) continue to accelerate at a lower rate		b) continue to move at constant speed
	c) slow down and finally stop		d) stop immediately

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.