3. Give the Uses of Non-metals in our Daily Life.
Ans: Nonmetals are used widely in our daily lives. We breathe in oxygen for our survival which is non-metal. Nitrogen is of vital importance to plant physiology and agriculture. Noble gases like argon, xenon are used to construct glowing sign boards which are used for advertisement purposes. Chlorine, a nonmetal, is used for the purification of drinking water. Iodine is used as an antiseptic for application on the wound. It prevents microbial growth on the wound. It is also used for the preparation of anti-bacterial gurgles for the production of throat Infection. Carbon, a nonmetal is an element around which the whole of the organic world is composed of. Carbon is the constituent of every organic compound. Carbon is also used for manufacturing carbon fibre which is used for making fishing rods, rockets, aeroplanes, etc.