Give reasons for the following: (a) Sulphuric acid forms two types of salts with NaOH. (b) Red-brown vapours are produced when concentrated sulphuric acid is poured on it (c) A piece of wood becomes black when concentrated sulphuric acid is poured on it. (d) Brisk effervescence is seen when oil of vitriol is added to sodium carbonate. [4 MARKS]

Give reasons for the following: (a) Sulphuric acid forms two types of

1.	Give reasons for the following: (a) Sulphuric acid forms two types of salts with NaOH. (b) Red-brown vapours are produced when concentrated sulphuric acid is poured on it (c) A piece of wood becomes black when concentrated sulphuric acid is poured on it. (d) Brisk effervescence is seen when oil of vitriol is added to sodium carbonate. [4 MARKS]
Answer» Give reasons for the following: (a) Sulphuric acid forms two types of salts with NaOH. (b) Red-brown vapours are produced when concentrated sulphuric acid is poured on it (c) A piece of wood becomes black when concentrated sulphuric acid is poured on it. (d) Brisk effervescence is seen when oil of vitriol is added to sodium carbonate. [4 MARKS]