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Class 9 Olympiad Science Mock Test 5
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Class 9 Olympiad Science Mock Test 5
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25 Questions

1. Which of these statements are true about air?
(i) Air is a mixture of several types of gases.
(ii) Air exerts pressure.
(iii) The composition of air is constant in the atmosphere.
2. Consider a heavenly body which has a mass twice that of the earth and a radius thrice that of the earth. The weight of a book on this heavenly body, if its weight on the earth is 900 N will be
3. In a factory, due to a sudden strike the work usually done in a day took a longer time. Which of the following happened?
4. Which of the following diseases are caused due to the defects that are present from birth?
5. Which of the following organs contain(s) smooth muscles?
6. A block of wood is pulled by a force of 300 N through a horizontal distance of 20 m. What is the work done by the wooden block?
7. By how much does the kinetic energy of a particle increase if the velocity is increased by a factor of three?
8. A student added sodium hydroxide solution to ferric chloride solution, and a reddish brown precipitate is formed. By what process is the precipitate separated from the mixture?
9. Which of the following characteristics is/are true about arthropods?
10. A worker lives at a distance of 1.32 km from the factory. If the speed of sound in air is 330 m s–1, how long will the sound of factory siren take to reach the worker?
11. To which of the following laws is the principle of conservation of linear momentum equivalent?
12. Which of the following statements aptly describes the phylum “Annelida”?
13. Which of the following is a vector quantity?
14. Which of the following statements is NOT true?
15. An 800 g ball is pulled up a slope as shown in the diagram. Calculate the potential energy it gains.
16. Which metal is NOT a solid at room temperature?
17. A person is suffering from chest pain, breathlessness, loss of body weight, persistent cough and produces blood stained sputum.

Identify the disease and its causative agent.
18. Two spheres each of mass 105 kg and radius 10 m are kept in contact. Find the force of gravitation acting between them.
19. Nisha labelled parenchyma tissue as shown below. Which of the marking is wrong?
20. By applying a force of 1 N, approximately what mass of a body can a person hold?
21. A longitudinal wave travels from east to west in air. In which direction do the particles of air move?
22. Which of the following has a regular repeated molecular pattern and large number of free surfaces in three dimensional space?
23. How does a tapeworm breathe?
24. Upthrust of a body in a fluid doesn't depend upon its
25. What are the functions of the stomata?
(i) Take in water (ii) Trap sunlight (iii) Take in oxygen (iv) Give out oxygen

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