JEE Main 2022 · 24 Jun · Shift 2 · Chemistry Q68

ChemistrySingle correct+4 / -1Question 68 of 90

In the industrial production of which of the following, molecular hydrogen is obtained as a byproduct ?

NaOH

NaCl

Na metal

\mathrm{Na_2CO_3}

Answer and worked solution

Official answer: A

Chlor-alkali process. Electrolysis of brine: $\mathrm{2NaCl+2H_2O\rightarrow2NaOH+Cl_2+H_2}$ . Hydrogen is a byproduct of making NaOH.

(A)

JEE Main 2022 · 24 Jun · Shift 2, Chemistry question 68