NEET Questions Solved


Very pure hydrogen (99.9%) can be made by which of the following processes ?

(a) Mixing natural hydrocarbons of high molecular weight

(b) Electrolysis of water

(c) Reaction of salt like hydrides with water

(d) Reaction of methane with steam

(c) Hydrogen of high purity is obtained by electrolysing aqueous barium hydroxide in presence of Ni electrodes.

             2e + 2H3O+          2H2O + 12H2            2OH-           H2O + 12O2 + 2eAlso pure metal hydrides give pure H2 NaH + H2O            NaOH + H2

Difficulty Level:

  • 10%
  • 61%
  • 23%
  • 8%