CREST Science Olympiad Class 7 Previous Year Paper

Getting ready for the Class 7 Science Olympiad? Practising with previous year question papers can be a game changer. These papers not only help students understand the kind of questions asked but also make revision more focused and effective.

What Makes These Papers Useful?

• They cover a range of topics like Heat, Motion and Time, Electric Current and its Effects, Winds, Storms and Cyclones etc.
• They improve logical thinking and help students practise answering within the time limit.
• Each paper comes with an answer key, making it easy to check answers and learn from mistakes.

Download the Science Olympiad Previous Year Paper for Class 7 (PDF) and give your child the right tools to prepare with confidence and perform their best in the exam.

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Syllabus:

Section 1: Heat, Motion and Time, Electric Current and its Effects, Winds, Storms and Cyclones, Light, Acids, Bases and Salts, Physical and Chemical Changes, Weather, Climate and Adaptations of Animals to Climate, Fibre to Fabric, Nutrition in Plants and Animals, Respiration in Organisms, Transportation in Plants and Animals, Reproduction in Plants, Natural Resources and Their Conservation.

Achievers Section: Higher Order Thinking Questions - Syllabus as per Section 1

Sample Paper Previous Year Paper Marking Scheme Free Study Material

Previous Year Questions

Q.1

Q.2

Q.3

Q.4

Q.5

Q.6

Q.7

Q.8

Q.9

Q.10

Q.1	Michael wrote two statements. They are as follows: In the starch test using iodine, the leaf turns blue-black in colour. The structures in the leaves, which contain chlorophyll are called chloroplasts. Which of the above statement(s) is/are true?
	a) Statement 1 only		b) Statement 2 only
	c) Both the statements are true		d) Both the statements are false

Q.2	Arrange the following in terms of artificial and natural fibres:                  Flax, Wool, Acetate, Nylon, Rayon
	a) Artificial fibres - Wool, Rayon Natural fibres - Flax, Acetate, Nylon		b) Artificial fibres - Nylon, Acetate, Rayon Natural fibres - Flax, Wool
	c) Artificial fibres - Flax, Wool Natural fibres - Acetate, Nylon, Rayon		d) Artificial fibres - Nylon, Wool Natural fibres - Flax, Acetate, Rayon

Q.3	Read the statements given below: Statement 1 - Factory wastes are treated with calcium chloride to neutralize the acid. Statement 2 - Magnesium hydroxide is used as an antacid to neutralize the excessive acidity in the stomach. Statement 3 - Common salt neutralizes the acid in the stomach. Which of the above statements are false?
	a) Statements 1 and 2		b) Statements 1 and 3
	c) Statements 2 and 3		d) All - Statements 1, 2 and 3

Q.4	A driver reversing his car at a speed of 3 m/s sees in his rearview mirror the image of a truck parked behind his car. Calculate the speed at which the image of the truck appears to approach the driver. The rearview mirror of a car is a plane mirror:
	a) 1 m/s		b) 2 m/s
	c) 6 m/s		d) 8 m/s

Q.5	Look at the picture shown below carefully and identify this step that plays a crucial part in the processing of wool:
	a) Shearing		b) Sorting
	c) Scouring		d) Reeling

Q.6	Rachel had kidney failure. Waste products in her body started to accumulate in her blood. Her blood needs to be filtered periodically through an artificial kidney. What is this process called?
	a) Excretion		b) Dialysis
	c) Filtration		d) Perspiration

Q.7	Identify the correct pattern from the given options:
	a) Fibre → Thread →Yarn		b) Fibre → Thread → Fabric
	c) Yarn → Thread→ Fabric		d) Thread → Yarn → Fabric

Q.8	Which of the following statement is correct?
	a) Size of the particles present in a soil has no influence on the properties of soil.		b) Loamy soil is a mixture of sand, clay and silt but contains no humus.
	c) Loamy soil is a mixture of sand, clay and silt also contain humus.		d) None of the above is correct.

Q.9	Mary took two paper bags and hung them on the two ends of a wooden stick. She held the stick by a string from the centre. Then she kept a burning candle below one of the bags. As we can see in the picture the balance is disturbed. What can we prove from this experiment?
	a) Warm air goes down and is heavier than cold air.		b) Warm air rises up and is lighter than the cold air.
	c) Warm air and cold air are of the same weight.		d) Both warm and cold air go down and both become heavy.

Q.10	The figure shows air-filled bulbs connected by a U-tube partly filled with alcohol. What happens to the levels of alcohol in the limbs X and Y when an electric bulb placed midway between the bulbs is lighted?
	a) The level of alcohol falls in both limbs.		b) The level of alcohol in the limb X rises while than in limb Y falls.
	c) The level of alcohol in limb X falls while that in limb Y rises.		d) There is no change in the levels of alcohol in the two limbs.

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Additional Preparation Resources

Students can also refer to the following resources to level up their CREST Science Olympiad (CSO) exam preparation for class 7 -

1. CREST Science Worksheets Package for class 7 - 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 7 - 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 7 for free.

Note: Don’t forget to download the CREST Science Olympiad past year paper pdf for class 7.