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

Q.1 Q.2 Q.3 Q.4 Q.5 Q.6 Q.7 Q.8 Q.9 Q.10

Q.1

Ron placed an object at a distance 2 m from a plane mirror. He then shifted the object 0.5 m away from the mirror. What is the distance between the object and its image?

Q.2

Fill in the blank:

To a small quantity of X, few drops of HCl are added. Consequently, colourless, odourless gas is produced. This gas on passing through lime water turns it milky proving the presence of ____________ of X.

Q.3

Fill in the blank:

A duster rests on a table, exerting a downward force on the table. The reaction to this force is _____________.

Q.4

In the following question, an assertion and reason are given. Choose the correct option:

Assertion: Fungi are a large group of organisms which do not photosynthesise.
Reason: All fungi are generally made up of fine threads called hyphae.

Q.5

In heavy vehicles, diesel is used as a fuel. Which of the following could be the reason for this?

Q.6

Four students made the following statements about the metals:

Robert: Metals are malleable.

Arya: All metal oxides are acidic in nature.

James: Metals have lustre.

Peter: Metal atoms have 1, 2 or 3 electrons in the outermost shell.

Which among them spoke incorrectly?

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:

Q.8

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.

Q.9

Arrange the different types of coal in the decreasing order of the quality of coal:

(1) Lignite
(2) Peat
(3) Anthracite
(4) Bituminous

Q.10

Which one of the following is the correct sequence of the reactivity order of the elements?

Your Score: 0/10

Answers to Previous Year Questions from CREST Olympiads:

Q.1cQ.2dQ.3bQ.4bQ.5cQ.6bQ.7bQ.8dQ.9aQ.10d

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.

Answers to Previous Year Questions from CREST Olympiads:

Q.1 : c | Q.2 : d | Q.3 : b | Q.4 : b | Q.5 : c | Q.6 : b | Q.7 : b | Q.8 : d | Q.9 : a | Q.10 : d

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