# ICSE Worksheet for Chapter - 6 More about Solid, Liquid and Gases Class 8

## Find ICSE Worksheet for chapter-6 More about Solid, Liquid and Gases class 8

1. CLASS-8
2. BOARD: ICSE
3. PHYSICS Worksheet - 6
4. TOPIC: More about Solid, Liquid and Gases
5. For other ICSE Worksheet for class 8 Science check out main page of Physics Wallah.

#### SUMMARY

• Pressure, Pressure in fluids, Pressure exerted by a gas, Effect of volume on pressure
• Applications & measurement of atmospheric pressure, Liquid pressure and its measurement
• Buoyant force, Sinking and floating, Law of floatation and its applications,

#### SECTION I – OBJECTIVE

1. If F is force acting normally on a surface of area A, then the pressure P is given by
1.  F*A
2.  F+A
3.  F/A
4. None
2. The S.I. unit of pressure is:
1. Pascal
2. Joule
3. Newton
4. dyne-cm-2
3. A device to measure liquid pressure is
1. thermometer
2. barometer
3. manometer
4. lactometer
4. Pressure inside liquid increases with:
1. increase in depth
2. decrease in depth
3. remain the same
4. NOT
5. The pressure exerted at any point on an enclosed liquid is transmitted:
1. only in one direction
2. only on the side of the container
3. in all directions
4. none of these
6. Density of iron in MKS system is7800 kg m-3. Its density in CGS system is
1. 7.8 g cm-3
2. 78 g cm-3
3. 0.78g cm-3
4. 780 g cm-3
7. For a substance, the ratio of mass to the volume is known as
1. relative density
2. refractive index
3. density
4. none of these
8. The unit of relative density is
1. kg m-3
2. kg cm-3
3. g m-3
4. none of these
9. Upthrust exerted by a body is equal to
1. mass of the body
2. apparent loss of weight of the body
3. weight of the body
4. none of these
10. If the weight of the liquid on a body is less than the upthrust of the liquid in which it is submerged, then the body will
1. float
2. sink
3. float and then sink
4. none of these

#### SECTION II - SUBJECTIVE

1. Explain the atmospheric pressure. Why does our body not feel the enormous atmospheric pressure?
2. Give reason for each of the following:
1. Dams and tall-buildings are made broader at the bottom.
2. A balloon collapses when air is removed from it.
3. Find out the area of body which experiences a pressure of 500 Pascal by a force of 100N.
4. Will the buoyant force insures or deuces when the body displaces greater volume of liquid? Give reason.
5. State the law of floatation.
6. What is the relation between the density of the body and the density of the liquid in which the body:
1. Sink
2. floats completely submerged
3. floats partially submerged.
7. A cube of a substance has a mass of 180 g and has a volume of 200 cm3. Find the density in CGS and MKS system.

### Solutions: to worksheet-6 Topic- More about Solid, Liquid and Gases

#### Objective Problems:

 1. (C) 2. (A) 3. (C) 4. (A) 5. (C) 6. (A) 7. (C) 8. (D) 9. (B) 10. (A)

#### Subjective Problems

1. 3. A = 0.2m2
2. 7. In C.G.S system, density = 0.9g/cm3 and in MKS system, density = 900kg/m3