Pressure in Liquids

Q. The device used to measure liquid pressure is called a .

1. barometer
2. thermometer
3. pressure gauge

Q.

Explain briefly why the water tank in a house is located at the highest possible level - usually on the roof.

Q.

The liquid pressure increases with the decrease in depth.

1. False

2. True

Q.

The device used to measure the relative density of a liquid is known as:

1. Spring balance

2. Hydrometer

3. Barometer

4. Thermometer

Q. When we walk on sand, our feet sink into it and it is difficult for us to walk, but a camel can easily walk on it because:
(i) The weight of the camel is spread over a large area covered by its feet.
(ii) The pressure exerted by the camel’s body on the sand is large.

1. Only (i) is correct
2. Only (ii) is correct
3. Both are correct and (ii) is the conclusion of (i)
4. Both are correct and (i) is the conclusion of (ii)

Q. Name the instrument which is used to measure atmospheric pressure.

1. Thermometer
2. Barometer
3. Manometer
4. Speedometer

Q. The device used to measure liquid pressure is called a .

1. barometer
2. thermometer
3. pressure gauge

Q.

As the depth of water increases the pressure ___.

Q.

Which all of the following are true about liquid pressure?

1. Inside the liquid, pressure increases with the increase in depth from its free surface.

2. In a stationary liquid, the pressure is same at all points on a horizontal plane.

3. Pressure is the same in all directions about a point inside the liquid.

4. A liquid can not exert pressure

Q.

People living in houses which are far from municipal water tanks often find it difficult to get water on the top floor even if it is situated lower than the level of the water tank. This is because:

1. The pipes are not of uniform diameter.

2. People living in the house near the tank consume all the water in the tank.

3. There is a loss of pressure when water is flowing.

4. There is generally some fault with the pipes otherwise water must reach up to the level of tank.

Q.

Why a camel can run in a desert easily?

Q. When the mouth of an inflated balloon was left open, the entire air that was blown into the balloon escapes. This is because of

1. acceleration due to gravity
2. air pressure difference
3. air inside was hot
4. air inside was cold

Q.

A camel can walk easily in sandy desert than a man although the weight of the camel is much more than that of the man. Comment.

Q. The device used to measure liquid pressure is called as ________.

1. barometer
2. pressure gauge
3. thermometer
4. speedometer

Q.

Explain why you will fill a bucket from a downstairs tap quicker than from an upstairs tap.

Q.

State the factors upon which upward pressure exerted by a liquid depends.

Q.

Which of the following is true regarding liquid pressure?

1. For the same height of the liquid column, a denser liquid exerts more pressure than a liquid of lesser density.

2. The pressure exerted by a liquid is not equal everywhere in the bulk of the liquid.

3. The pressure exerted by a liquid acts equally in all directions.

4. For the same height of the liquid column, a denser liquid exerts less pressure than a liquid of lesser density.

Q. Among all the objects of the same mass shown below, which of the following objects will exert the maximum pressure on the floor kept as shown?

1. Object A:
   
2. Object B:
3. Object C:
4. Object D:

Q.

Harry says water exerts pressure on the bottom of the bucket, but Robert says water exerts pressure on the wall of the bucket. Whose statement is correct?

1. Harry

2. Robert

3. Both, Harry and Robert, are correct

4. Both, Harry and Robert, are incorrect

Q.

Explain why: A camel walks easily on a sandy surface than a man, although he is much heavier than a man.

Q.

Name the factors that have no effect on the pressure at a point inside any liquid.

Q.

A camel can walk easily on a sandy surface because it has long legs.

1. True
2. False

Q.

A tennis ball is partly submerged in the mud water in a pool. The upward force acted by the displaced mud water on the ball is called ___ .

Q.

Camels walks easily in desert.

Q.

Two sealed containers 'A' and 'B' are taken to outer space where there is neither gravity nor atmosphere. Container 'A' is filled with water and container 'B' is filled with air. Choose the correct observation(s)?

1. Pressure inside container 'A' remains intact.

2. Pressure inside container 'A' will become zero.

3. Pressure inside container 'B' will remain intact.

4. Pressure inside container 'B' will become zero.

Q.

Consider two cylindrical vessels of different diameters as shown here. Water is filled upto same height in both of them. 'A' and 'B' are points at the bottom of the vessels. Now choose the correct option.

1. Pressure is same at both the points.

2. The pressure at 'A' is greater.

3. Nothing can be said.

4. The pressure at 'B' is greater.

Q. The pressure inside a liquid increases as the depth decreases.

1. True
2. False

Q.

Explain why the walls of a dam are thicker near the bottom than at the top.

Q.

When does a body to float in a liquid?

1. The density of the object is less than that of the liquid.

2. The density of the object is greater than that of liquid.

3. The mass of the object is less than that of liquid.

4. The temperature of the object is less than that of liquid.

Q. Harry says water exerts pressure on the bottom surface of the bucket as well as on the walls, but Robert says water exerts pressure only on the walls of the bucket. Choose the correct option.

1. Harry's statement is not correct.
2. Robert's statement is correct.
3. Harry's statement is correct.
4. Neither of them is correct.