Absolute and Relative Humidity

Q. The temperature at which saturation occurs in a given sample of air is known as point.

1. boiling
2. dew
3. triple
4. melting

Q. Absolute Humidity is expressed mainly in which of the following units?

1. $g/m^3$
2. $\mathrm{lb}/m^3$
3. $m^3/g$
4. $\mathrm{ml}/g^3$

Q. What is the effect of increase in temperature on relative humidity?

1. Increases
2. Decreases
3. Remains stable
4. Falls below zero

Q. Humidity is the amount of water vapour present in the air.

1. True
2. False

Q. Absolute humidity is always expressed in percentage.

1. True
2. False

Q. Relative humidity measures the water vapour at a temperature to the minimum amount that the atmosphere can hold at the same temperature.

1. True
2. False

Q. Humidity is the measure of which of the following?

1. Measure of water vapour in the atmosphere.
2. Measure of partial vapour pressure in the atmosphere.
3. Measure of water vapour in the stratosphere.
4. Measure of water in the atmosphere.

Q. The amount of water vapour present in the air is called ______.

1. Condensation
2. Humidity
3. Precipitation
4. Cirrus

Q. The temperature at which saturation occurs in a given sample of air is known as ______.

1. Humidity
2. Condensation
3. Stratus
4. Dew point

Q. Air is filled in a cylinder that has a height of 30cm and a radius of 4cm. The air that is inside the cylinder contains 500 gm of water vapour.

What is the absolute humidity inside the cylinder?

1. $331.7x{10}^{3}g/m^3$
2. $221.7x{10}^{3}g/m^3$
3. $331.7x{10}^{-}3g/m^3$
4. $200x{10}^{-}3g/m^3$

Q. Choose the best option based on the four statements given below.

1. Saturation level is the point at which the relative humidity is 70%.

2. Orographic rainfall is more commonly seen in mountainous regions.

3. Cumulus clouds are formed at a height of 4, 000 to 7, 000 m.

4. Temperature does not affect the humidity of a place.

1. Only 1 and 3 are correct.
2. Only 1 and 2 are correct.
3. Only 2 and 3 are correct.
4. Only 3 and 4 are correct.

Q. The amount of water vapour present in the air is called ______.

1. Condensation
2. Humidity
3. Precipitation
4. Cirrus

Q. The volume of air inside a cylinder is $5m^3$. The amount of water vapour in the cylinder is 500 g. What is the absolute humidity inside the cylinder?

1. $250g/m^3$
2. $100m^3/g$
3. $100g/m^3$
4. $250m^3/g$

Q. Air containing moisture is trapped inside a sphere of radius of 2m. The air inside the sphere has an absolute humidity of $250g/m^3$.

What is the amount of water vapour present inside the sphere?

1. 8000 g of water vapour
2. 8375 g of water vapour
3. 2000 g of water vapour
4. 2375 g of water vapour

Q. Absolute Humidity is the actual amount of the ____ in grams present in one cubic meter volume of air.

1. Liquid
2. Gas
3. Water Vapour
4. Solid

Q. is the actual amount of the water vapour in grams present in one cubic meter volume of air.

1. Precipitate
2. Sublimate
3. Absolute humidity
4. Relative humidity

Q. If I say that the volume of a particular patch of air is 3 cubic meters and the total weight of water vapour present in this patch is 150 grams, then, the absolute humidity turns out to be ___.

1. $50g/m^3$
2. $100g/m^3$
3. $150g/m^3$
4. $200g/m^3$

Q.

When in winter the temperature decreases instantly by 6-8 degrees Celsius, it is termed as ________.

Q. When the relative humidity reaches _____, it is known as satuaration level.

1. 50%
2. 70%
3. 100%
4. 30%

Q. How is relative humidity expressed?

1. Percentage
2. Gram per cubic meter
3. Milligram per cubic meter
4. Kilogram per meter