Question

Gases ‘X’ and ‘Y’ are liberated at cathode and anode respectively during the electrolysis of water. Oxide of gas ‘X’ further combines with the gas exhaled during respiration to form a compound ‘Z’. Compound ‘Z’ is

• A.
  $CaC{O}_3$
• B.
  $H_{2}C{O}_3$
• C.
  $H_{2}O$
• D.
  $HCl$

Answer 1

The correct option is B

$H_{2}C{O}_3$
The electrolysis of water yields hydrogen (X) and oxygen (Y) gases at cathode and anode respectively.

The reaction taking place during the process of respiration is as follows:

$C_6{H}_{12}{O}_6\left(aq\right)+6O_2\left(aq\right)\to 6C{O}_2+6H_{2}O\left(l\right)+energy$

The gas exhaled during respiration is $C{O}_2$.

So, the oxide of (X) i.e. $H_{2}O$ combines with $C{O}_2$ to form a compound $H_{2}C{O}_3$ (Z).

Hence, the correct answer is option (b).