Question

Relative humidity is expressed as ______.

Options

• Fraction

• Percentage

• Absolute number

• g/cm³

Answer 1

Relative humidity is expressed as a percentage.

Explanation:

Relative humidity is the ratio of the actual amount of water vapor present in the air to the maximum amount of water vapor the air can hold at the same temperature. It is expressed as a percentage to indicate how saturated the air is with moisture. For example, if the relative humidity is 60%, the air holds 60% of the maximum water vapor it could hold at that temperature.

Hence, relative humidity is always expressed as a percentage value, not as a fraction, absolute number, or in terms of grams per cubic centimeter (g/cm³), which is a unit related to absolute humidity, not relative humidity.