Question

(j) Aluminium carbide + water → aluminium hydroxide + methane
(k) Iron pyrites (FeS2) + oxygen → ferric oxide + sulphur dioxide
(1) Potassium permanganate + hydrochloric acid → potassium chloride + manganese chlo
(m) Aluminium sulphate + sodium hydroxide → sodium sulphate + sodium meta aluminat
(n) Aluminium + sodium hydroxide + water → sodium meta aluminate + hydrogen
(0) Potassium dichromate + sulphuric acid → potassium sulphate + chromium sulphate
(p) Potassium dichromate + hydrochloric acid → potassium chloride + chromium chi
(9) Sulphur + nitric acid → sulphuric acid + nitrogen dioxide + water
(r) Sodium chloride + manganese dioxide + sulphuric acid → sodium hydrogen
+ manganese sul​

Answer 1

Explanation:

If the aluminum melts and reacts with the carbon, it becomes aluminum carbide (Al4C3) which, when dry, is a harmless, yellowish brown powder. However, aluminum carbide reacts with water to give aluminum hydroxide (Al(OH)3) plus the well-known natural gas fuel, methane (CH4).