9th science exam parer
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Answers
Answer:
1. During summer water kept in an earthen pot becomes cool because of the phenomena of
(A) Diffusion
(B) Transpiration
(C) Osmosis
(D) Evaporation
2. Sucrose (sugar) crystals obtained from sugarcane and beetroot are mixed together. Will it be a
pure substance or mixture? Give reason for the same.
3. Why are we able to SIP hot tea or milk faster from a saucer rather than a cup?
4. The unit of force is……..
5. Define law of inertia.
6. If acceleration is zero what is the resultant force.
7. Draw a distance time graph with linear velocity.
8. Mass of the body is 10kg and acceleration is 2ms-2. Find the force act on the object?
9. Define retardation
10. Which organelle is involved in the formation of lysosomes?
11. (a). Which organelle serves as a channel for transport of materials between cytoplasm and
nucleus?
12. (a). Differentiate between diffusion and osmosis.
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13. ________ is called the energy currency of the cell
a. Endoplasmic reticulum
b. Oxygen
c. ATP
d. Mitochondria
For question numbers 14, 15 and 16, two statements are given- one labeled Assertion (A) and the
other labeled Reason (R). Select the correct answer to these questions from the codes (a), (b), (c)
and (d) as given below:
a) Both A and R are true, and R is correct explanation of the assertion.
b) Both A and R are true, but R is not the correct explanation of the assertion.
c) A is true, but R is false.
d) A is false, but R is true.
14. ASSERTION (A): On applying pressure, liquids convert into gases.
REASON (R): On applying pressure, intermolecular space decreases.
15. a). ASSERTION: Gaseous exchange takes place in the cells
REASON: Concentration of gases are different inside the cell and outside the cell .
HOPE THIS COULD HELP U , IM ALSO 9TH ONLY THIS IS MY SCIENCE PAPER
Explanation:
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