Question

2 ml of sodium hydroxide is added to a few pices of zn granules in a test tube

Answer 1

Answer:

Zn reacts with NaOH to form a coordination compound called sodium zincate with evolution of H2 gas. When sodium hydroxide is heated with Zinc granules - Sodium Zincate and hydrogen gas is evolved. When burning splinter is brought near the mouth of the test tube, it burns with a pop sound.