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.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	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.3	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.4	If an object in air is viewed from beneath the surface of water below, where does the object appear to be?
	a) The object appears above its true position.		b) The object appears exactly at is true position.
	c) The object appears below its true position.		d) The object cannot be viewed from beneath the water's surface.

Q.5	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

Q.6	Which among the following salts produces maximum number of metal ions per molecule when dissolved in a suitable solvent?
	a) Aluminium phosphate, AlPO4		b) Magnesium phosphate, Mg3(PO4)2
	c) Sodium biphosphate, Na2HPO4		d) Aluminium dihydrogen phosphate, Al(H2PO4)3

Q.7	A sound wave travels from air to glass. The velocity of sound in air is va and the wavelength is λa. What is the velocity in glass, if the wavelength of the sound wave in the glass is λg?
	a) λg vg/va		b) λg va/λa
	c) λa va/vg		d) λa va/λg

Q.8	What happens when the ends of metal wire are not connected to a battery?
	a) Electrons move in random directions		b) Electrons move from negative electrode to positive electrode
	c) Electrons move from positive electrode to negative electrode		d) Protons move in random direction in such a way that their net movement in a unit volume is zero

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	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

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.