CREST Science Olympiad Class 8 Previous Year Papers

CREST Science Olympiad Previous Year Paper PDF for Class 8:

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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

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


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.


Which of the following can lead to menstruation in a 21-year-old woman during ovulation?
A. Sperms not available for fertilisation
B. Oviducts blocked
C. Sperms available for fertilisation
D. Oviducts not blocked


Which of the following pairs cannot undergo displacement reaction?


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.


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.


Match the column I with column II:

Column I

Column II








Pin hole camera


Total internal reflection


Red light used as traffic signal


Rectilinear propagation



Column I Column II
A. Dispersion a. Mirage
B. Scattering b. Pin hole camera
C. Total internal reflection c. Red light used as traffic signal
D. Rectilinear propagation d. Rainbow


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?


Fill in the blank:

For showing the full image of an object, the size of the plane mirror should be at least ____________.


Why is just one side of the Moon visible from Earth?


The sound produced by a tuning fork travels from air to glass. Which of the following physical quantities remains the same?

  1. Velocity
  2. Frequency
  3. Wavelength
  4. Amplitude

Your Score: 0/10

Answers to Previous Year Questions from CREST Olympiads:


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 -> Dashboard -> Additional Practice -> Buy & new users can visit
  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 : a | Q.3 : b | Q.4 : b | Q.5 : b | Q.6 : b | Q.7 : a | Q.8 : b | Q.9 : b | Q.10 : b