Question

Observe the figure below and write th gas collected in the test tube along with reaction

Answer 1

Answer: Dude where is the figure??? But I am making a guess that it is the electrolysis of water. Then when water molecules are split, oxygen gets collected at the anode and hydrogen gas gets collect at the cathode. This is electric decomposition reaction.

Equation:

$2H_{2}O\rightarrow\ 2H_{2} + O_{2}$