Prof. Anil Thomas and Prof. Santosh Yadav Solutions for Chapter: Hydrogen, Exercise 1: Classical Thinking

The oxidation number of oxygen in ${\text{H}}_{\text{2}}{\text{O}}_{\text{2}}$ is____

Hydrogen peroxide does NOT act as a/an_____

${\text{H}}_{\text{2}}{\text{O}}_{\text{2}}$ on reacting with ethene gives_____

______is present as an impurity in dihydrogen.

Which of the following represents a cathode reaction in fuel cell?

Which of the following statements is INCORRECT about fuel cells that use dihydrogen?

Hydrogen is prepared on an industrial scale_____

The most abundant element in the universe is______.