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

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Q.10

Q.1	In a container (cross-sectional area A) a homogeneous solid cylinder of length L (L < H/2) as shown in the figure), cross-sectional area A/5 is immersed such that it floats with its axis vertical at the liquid-liquid surface with length L/4 in the denser liquid (density = 2d) as shown in the figure. The lower density liquid (density = d) is open to the atmosphere. The density D of solid is given by:
	a) 4d/5		b) 4d
	c) 5d/4		d) d/5

Q.2	Why is the metabolism of glucose considered a type of slow combustion?
	a) Glucose combines with oxygen and releases energy gradually.		b) Glucose burns rapidly and produces a visible flame.
	c) Glucose releases all its stored energy at one time.		d) Glucose changes into carbon dioxide without using oxygen.

Q.3	Which of the following statement is/are false? Cellulose is made up of glucose units. Weaving and knitting are two processes to get plastic. Plastics get corroded easily. Plastics are not polymers.
	a) Only 1		b) 2 and 3
	c) 1 and 3		d) 2, 3 and 4

Q.4	Which of the following pair doesn't have the same dimensions?
	a) Force and pressure		b) Pressure and stress
	c) Impulse and momentum		d) Work and energy

Q.5	Which one of the following is/are included in protoplasm? I. Nucleus II. Cytoplasm III. Plasma membrane IV. Nucleoplasm
	a) I and II		b) I, II and III
	c) II only		d) I, II and IV

Q.6	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.7	The speed of sound in air and sea-water are given to be 340 m/s and 1440 m/s respectively. A ship sends a strong signal straight down and detects its echo after 1.5 secs. What is the depth of the sea at that point?
	a) 2.16 km		b) 1.08 km
	c) 0.51 km		d) 0.255 km

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 sound wave travels from air to glass. The velocity of sound in air is va and the wavelength is λa. What is the velocity in glass, if the wavelength of the sound wave in the glass is λg?
	a) λg vg/va		b) λg va/λa
	c) λa va/vg		d) λa va/λg

Q.10	In the following question, an assertion and a reason are given. Choose the correct option: Assertion: Sound waves cannot pass through the vacuum. Reason: Sound waves are mechanical waves, which require a medium for their propagation.
	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

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.