GENERAL KNOWLEDGE

Detailed explanation-1: -*35 parts of dry air and 65 parts of water vapor. Water vapor is only about 5/8 as heavy as an equal volume of dry air. The more water vapor in the air, the less the air weighs.

Detailed explanation-2: -The weight of water vapor per unit weight of air is called Specific humidity. It is usually expressed as grams of vapor per kilogram of air. The rate of evaporation of water from any surface is directly proportional to the specific humidity, the difference between the surface and the adjoining air.

Detailed explanation-3: -Water vapor molecules, which are one oxygen atom with a weight of 16 and two hydrogen atoms each with a weight of 1, add up to a molecular weight of 18, which is much lighter than the nitrogen and oxygen they displace when they evaporate into air.

Detailed explanation-4: -Explanation: Humidity ratio or Specific humidity is the mass of water vapor present in 1 kg of dry air. It is generally expressed in, g / kg of dry air.

Detailed explanation-5: -The amount of water vapor in atmosphere determines the level of humidity. As the amount of water vapor in the atmosphere increases so does the level of humidity. Higher humidity levels result in excessive sweating and this sweat does not dry quickly leaving us feeling hot and sticky.