Question

Give any Two method of preparation of hydrogen gas​

Answer 1

Answer:

by by dipping zinc rod into a solution of caustic potash or either in sodium hydroxide solution

another way of preparation of hydrogen gas is to react active metals like sodium and potassium with cold water metals like magnesium with steam metals like magnesium and manganese also with very dilute nitric acid

Answer 2

Explanation:

In the laboratory, H2 is usually prepared by the reaction of acids on metals such as zinc with Kipp's apparatus. The electrolysis of water is a simple method of producing hydrogen. A low voltage current is run through the water, and gaseous oxygen forms at the anode while gaseous hydrogen forms at the cathode