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 the reason are given. Choose the correct option: Assertion: When visible light is passed through a prism, violet colour is seen at the bottom of the screen. Reason: Prism has the highest refractive index for violet light.
	a) Assertion and the reason are true and reason is the correct explanation of the assertion		b) Assertion and the 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.2	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.3	Four students made the following statements: Deepika: Shape and size of cells are related to a specific function. Amit: Each cell has its own capacity to perform. Rahul: Some cells have changing shapes. Sachin: Same type of cells are present in all body tissues. Which among the above students made the correct statement(s)?
	a) Rahul only		b) Rahul and Deepika only
	c) Sachin and Amit only		d) Deepika, Amit and Rahul

Q.4	Which of the following is/are a nitrifying bacterium? Nitrosomonas  Pseudomonas Nitrobacter Lactobacillus
	a) Only 1		b) Both 1 and 4
	c) Both 2 and 4		d) Both 1 and 3

Q.5	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.6	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

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	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.9	Which of the following is known as the weak zone around the boundaries of plates underneath the earth, which are prone to slide and cause an earthquake?
	a) Fault zone		b) Eruption zone
	c) Explosive zone		d) Sliding zone

Q.10	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

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.