CREST Science Olympiad Class 8 Previous Year Papers

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

Q.1

Q.2

Q.3

Q.4

Q.5

Q.6

Q.7

Q.8

Q.9

Q.10

Q.1	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 metal solution is taken as electrolyte? 2. Which electrode is connected to the positive terminal of the battery?
	a) 1-Copper sulphate solution 2-The thick plate of impure copper (Anode)		b) 1-Iron sulphate solution 2-The thick plate of impure copper (Cathode)
	c) 1-Copper sulphate solution 2-The thin plate of pure copper (Anode)		d) 1-Iron sulphate solution 2-The thin plate of pure copper (Cathode)

Q.2	When the angle between two plane mirrors is 60o, how many multiple images will be formed by the mirrors?
	a) 5		b) 6
	c) 7		d) 8

Q.3	Consider the following statements and choose the correct option: Statement 1: Jack observed a species of single-celled organisms in a laboratory that reproduce by dividing into two daughter cells, each genetically identical to the parent. This type of reproduction is called budding. Statement 2: Mark observed a type of asexual reproduction in yeast cells, where a smaller cell grows off the surface of a larger cell and eventually separates. This type of reproduction is called regeneration.
	a) Statement 1 is correct but statement 2 is incorrect.		b) Statement 1 is incorrect but statement 2 is correct.
	c) Both the statements are correct.		d) Both the statements are incorrect.

Q.4	What benefit does yeast gain from carrying out fermentation?
	a) Carbon dioxide is available for photosynthesis.		b) Energy is available for growth.
	c) Ethanol is available for growth.		d) Glucose is available for respiration.

Q.5	In the given question, an assertion and a reason are given. Choose the correct option: Assertion: The temperature increases inside the fractionating column on going from the bottom to the top. Reason: The column is not heated at the bottom.
	a) Both assertion and reason are true and reason is the correct explanation of assertion.		b) Both assertion and reason are true, but reason is not the correct explanation of the assertion.
	c) Assertion is correct, but reason is incorrect.		d) Both assertion and reason are incorrect.

Q.6	Which of the following is correct definition of ignition temperature?
	a) The lowest temperature at which a substance catches fire spontaneously.		b) The lowest temperature at which a substance catches fire.
	c) The lowest temperature at which a substance changes its physical state.		d) The lowest temperature required for a chemical reaction to take place.

Q.7	An elephant has a mass of 3000 kg. Each of its foot has a surface area of 0.4 m2. A lady of mass 45 kg wears stiletto shoes. Each of the stiletto heels has a surface area of 0.01 m2. Assuming there is the equal distribution of mass on each foot. Calculate the maximum possible pressure that could be exerted by a stiletto heel worn by the lady:
	a) 25500 Pa		b) 22500 Pa
	c) 52500 Pa		d) 20000 Pa

Q.8	Consider the following statements about the physical and chemical properties of metals and choose the correct option: 1. All metals are ductile. 2. Generally metals are ductile. 3. Metals which are more reactive than hydrogen react with acids to release hydrogen gas. 4. All metals react with acids to release hydrogen gas.
	a) Only 1 and 2 are correct		b) Only 2 and 3 are correct
	c) 1, 2 and 3 correct		d) 1, 2, 3 and 4 are correct

Q.9	Choose the correct option and complete the following sentence: A lightning conductor installed in a building ________________.
	a) does not allow the lightning to fall on the building		b) repels the lightning
	c) forces the lightning to fall in an area where there are no buildings		d) conducts electric charge to the ground when lightning strikes the building

Q.10	Read the following statements and choose the correct option: Statement 1: The antibiotic penicillin inhibits the growth of bacteria by blocking the process which helps to build its cell membrane. Statement 2: The cell membrane is selectively permeable because it allows the movement of certain molecules in and out of the cell while the movement of other molecules is prevented.
	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

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.