Name the drying agent used for purifying hydrogen chloride gas.
Conc. nitric acid
Conc.Hydrochloric acid
Conc.Sodium hydroxide
Conc. sulphuric acid
Conc. sulphuric acid is used as a drying agent for purifying hydrogen chloride gas.
Name the gas obtained when rock salt reacts with conc. sulphuric acid.
Conc. sulphuric acid is used as a dehydrating agent due to its ___ nature.