A pop sound is heard along with the evolution of colourless gas when zinc granules are added to test tube containing dil. HCI. Explain the reaction taking place with balanced chemical equation.

2 ml of sodium hydroxide solution is added to a few pieces of granulated zinc metal taken in a test tube when the contents are formed a gas involves which is bubbled through a soap solution before testing write the equation of the chemical reaction involved and the tests to detect the gas in the gas which will be evolved when the same metal reacts with dilute solution of a strong acid2 ml of sodium hydroxide solution is added to a few pieces of granulated zinc metal taken in a test tube when the contents are formed a gas involves which is bubbled through a soap solution before testing write the equation of the chemical reaction involved and the tests to detect the gas in the gas which will be evolved when the same metal reacts with dilute solution of a strong acid .