Question

mention a test to identify the gas liberated when zinc is treated with a solution of naoh​

Answer 1

Explanation:

In the litmus test experiment the red litmus solution turns into blue when sodium hydroxide is added. Therefore bases such as NaOH show basic character. Sodium hydroxide reacts with active metals such as zinc to form sodium zincate and liberate hydrogen gas.

Answer 2

Answer: Hydrogen gas is produced when Zn reacts with NaOH .

Hydrogen gas burns with a pop sound when brought near a flame .

Explanation: This is the laboratory preparation of hydrogen .

 Zn + NaOH -> Na2Zno2 + H2