Chapter 10 Properties of Matter - Test 1

1. Strain is the force that acts on unit area of an object.

1) False
2) True
2. Length of the rod increases with increase in temperature.

1) True
2) False
3. Unit of pressure is Newton.

1) False
2) True
4. Viscosity of air is greater than blood.

1) False
2) True
5. Tensile stress divided by strain is called young s modulus

1) True
2) False
6. Surface tension of mercury is greater than surface tension of water.

1) True
2) False
7. If pressure is exerted on a liquid, the liquid distributes it equally in all directions. This is called Pascal s law.

1) False
2) True
8. The force that pushes an object immersed in a liquid in the upward direction is called buoyant force

1) True
2) False
9. Formula for liquid pressure is P = Pgh

1) False
2) True
10. Young modulus for iron is smaller than young modulus for rubber.

1) True
2) False
11. Stress has no units because it is the ratio of two similar quantities.

1) False
2) True
12. Units of pressure and strain are same.

1) True
2) False
13. The existence of the three states of matter is due to attractive forces that exist between atoms and molecules.

1) True
2) False
14. An object is said to be elastic if it restores its original size and shape.

1) False
2) True
15. Greater the force that is applied on an object, smaller will be the amount of strain produced on it

1) True
2) False
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