Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main 202225 JulyEvening Shift
Exam
JEE Main
Year
2022
Date
25 July
Shift
Evening Shift
Subject
Chemistry
Chapter
Hydrogen

JEE Main 2022 · 25 July · Evening Shift · Chemistry · Hydrogen

High purity (> 99 . 95 %) dihydrogen is obtained by

High purity \left(> 99 . 95 %\right) dihydrogen is obtained by

Options

  1. Areaction of zinc with aqueous alkali.
  2. Belectrolysis of warm aqueous barium hydroxide solution between nickel electrodes.
  3. Celectrolysis of acidified water using platinum electrodes.
  4. Dreaction of zinc with dilute acid.

Correct answer

B. electrolysis of warm aqueous barium hydroxide solution between nickel electrodes.

Step-by-step solution

Dihydrogen of high purity (>99.95( > 99 . 95 % ) is obtained by electrolysing warm aqueous barium hydroxide solution between nickel electrodes. In electrolysis, the reaction occurs at the anode and cathode :-

At anode :- 2OH−→H2O+12O2+2e−2{OH}^{-} \to {H}_{2}O + \dfrac{1}{2}{O}_{2} + 2{e}^{-}

At cathode :- 2H2O+2e−→2OH−+H22{H}_{2}O + 2{e}^{-} \to 2{OH}^{-} + {H}_{2}

Hence, the high purity dihydrogen is obtained by electrolysing warm aqueous barium hydroxide.

Practice Hydrogen on Quantrex Academy →

More from Hydrogen

The mass of iron converted into Fe_3O_4 by the action of 18 g of steam is : (Given… JEE Main 2026During water-gas shift reaction JEE Main 2023Given below are two statements, one is labelled as Assertion A and the other is labelled… JEE Main 2023Given below are two statements: Statement I: Permutit process is more efficient compared… JEE Main 2023Match List I with List II List I Type of Hydride List II Example A Electron deficient… JEE Main 2023Which hydride among the following is less stable? JEE Main 2023Given below are two statements: one is labelled as Assertion A and the other is labelled… JEE Main 2023Given below are two reactions, involved in the commercial production of dihydrogen ( H _… JEE Main 2023 Full Hydrogen list All JEE Main PYQs