The ionization of a hydrogen atom gives rise to:

Which property among the following is the same for both hydrogen and deuterium molecules?

Which of the following processes does not involve the use of dihydrogen?

Among the following,the correct statements are:
$I$. $LiH, BeH_2$ and $MgH_2$ are saline hydrides with significant covalent character.
$II$. Saline hydrides are volatile.
$III$. Electron-precise hydrides are Lewis bases.
$IV$. The formula for chromium hydride is $CrH$.
The correct option is:

The single largest industrial application of dihydrogen is:

In which of the following reactions, hydrogen is evolved?
$I$. Reaction of sodium borohydride with iodine
$II$. Oxidation of diborane
$III$. Reaction of boron trifluoride with sodium hydride
$IV$. Hydrolysis of diborane