Such process of condensation of water is facilitated when dust and other suspended particles act as the nucleus for these droplets to form around.An enormous collection of tiny droplets of water appear in the form of clouds.These droplets of water,once formed,slowly grow bigger by condensation of more water droplets.When the droplets have grown big and heavy,they fall down in the form of a rain.When the temperature of air is very low,precipitation then may occur in the form of snow,sheets or hail.
Movement of air plays an important role in bringing rains in India.Due to its peninsular shape and differences in temperature and pressure,monsoon winds are prevalent in India.In summer season southwest monsoon is active while during winter season northeast monsoon is active.
1)Burning of fossil fuels such as coal and petroleum
4)Photo chemical smog,smoke.
Rishika Mukeriya says
Thank you for your information