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

Q.1

Q.2

Q.3

Q.4

Q.5

Q.6

Q.7

Q.8

Q.9

Q.10

Q.1	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.2	In the given question, an assertion and a reason are given. Choose the correct option: Assertion: In heavy vehicles, diesel is used as a fuel. Reason: Diesel has high power and is convenient.
	a) Assertion and reason are correct and reason is the correct explanation of the assertion		b) 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.3	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.4	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.5	Read the following questions and choose the correct option: (i) Under similar conditions, in which of the following gases will the speed of sound be the least? (ii) The velocity of sound in a gas is 4 times that in the air at the same temperature. When a tuning fork is sounded in air a wave of frequency 480 Hz and wavelength λ1 is produced. The same fork is sounded in the gas and if λ2 is the wavelength of the wave, Find λ2/ λ1.
	a) (i)-Nitrogen, (ii)-2		b) (i)-Oxygen, (ii)-4
	c) (i)-Carbon dioxide, (ii)-1/2		d) (i)-Sulphur dioxide, (ii)-4

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	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.8	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.9	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.10	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

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.