(i) Identify the acid and the base whose combination forms the common salt that you use in your food. Write its formula and chemical name of this salt. Name the source from where it is obtained. (ii) What is rock salt? Mention its colour and the reason due to which it has this colour. (iii) What happens when electricity is passed through brine? Write the chemical equation for it.

(i) Identify the acid and the base whose combination forms the common

1.	(i) Identify the acid and the base whose combination forms the common salt that you use in your food. Write its formula and chemical name of this salt. Name the source from where it is obtained. (ii) What is rock salt? Mention its colour and the reason due to which it has this colour. (iii) What happens when electricity is passed through brine? Write the chemical equation for it.
Answer» SOLUTION :(i) Hydrochloric acid and sodium hydroxide `NaOH+HCl to NaCl+H_2O` NaCl, Sodium Chloride, Ocean water. (ii) DEPOSITS of solid SALT are found in several PARTS of the world. These large crystals are CALLED rock salt. Colour of rock salts is brown, due to impurities. (iii) `2NaCl+2 H_2O to^(El ectricity) 2NaOH+Cl_2+H_2`