The measure of the actual amount of water vapour in the air, regardless of temperature:

1. Absolute Humidity
2. Humidity
3. Dew Point
4. Relative Humidity

The process by which products of condensation, viz water droplets, ice crystals, sleet etc. fall to the ground:

1. Evaporation
2. Humidation
3. Precipitation
4. Condensation

Which of the following type of cloud has a cauliflower-like shape?

1. Cirrus
2. Cumulus
3. Strata
4. None of the above

Condensation nuclei are :

1. impurities that support condensation.
2. water particles that help in precipitation.
3. droplets formed as a result of condensation.
4. droplets that fall to the ground.