Which of the following isotopes of hydrogen has the maximum sum of $e^- + p^+ + n^0$?

Which of the following fuels has the maximum calorific value per gram?

Exhausted permutit does not contain ....... ion.

In Bosch's process,which gas is utilised for the production of hydrogen gas?

Identify the catalyst used in the following reaction: $CO_{(g)} + H_2O_{(g)} \xrightarrow{623 \ K} CO_{2_{(g)}} + H_{2_{(g)}}$

Hydrogen readily combines with metals and thus shows its