CREST Science Olympiad Class 8 Previous Year Papers

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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

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Q.10

Q.1	Which of the following can lead to menstruation in a 21-year-old woman after ovulation? A. Sperms not available for fertilisation B. Oviducts blocked C. Sperms available for fertilisation D. Oviducts not blocked
	a) A and B		b) B and C
	c) A and D		d) C and D

Q.2	Four classmates were having a discussion about the correct way for sowing seeds. This is what they said: Richard: Seeds should be sown at right intervals. Susan: Seeds should be sown at the right depth. David: Seeds should be sown in dry soil. Jacob: Seeds should not be sown in highly wet soil. Which of them was/were incorrect?
	a) Only Jacob		b) Only David
	c) Both Susan and Richard		d) Both David and Susan

Q.3	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.4	In the following question, an assertion and a reason are given. Choose the correct option: Assertion: The forces acting on a body can be replaced by the resultant force only as regards the motion of the body as a whole. Reason: The resultant force cannot replace the several forces acting on a body in other respects.
	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	When a ray of light strikes a plane mirror at an angle of 15o with the mirror, what will be the angle of reflection of the ray?
	a) 15o		b) 30o
	c) 75o		d) 85o

Q.6	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.7	Why is just one side of the Moon visible from Earth?
	a) The Moon does not rotate on its axis as it orbits Earth.		b) The Moon rotates on its axis at the same rate that the Moon orbits the Earth.
	c) Half of the Moon is always unlit by the Sun.		d) Half of the Moon does not reflect light.

Q.8	An echo returned in 3 s. What is the distance of the reflecting surface from the source, given that the speed of sound is 342 m s-1?
	a) 520 m		b) 515 m
	c) 530 m		d) 513 m

Q.9	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.10	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

Your Score: 0/10

Students can download the CREST Science Olympiad previous year paper pdf for class 8 from this page. Each question in the paper carries 1 mark. The answer key for all the questions is also provided on the last page.

One of the most significant advantages of solving the past years’ papers is that it helps students improve their time management skills, strengthens their understanding of concepts and aids them in applying the concepts they have mastered. Also, solving previous years’ papers a few days before the exam can help students to revise the concepts quickly. Therefore, students must refer to previous years' papers before appearing for the final exam as many advantages are associated with it.

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.