Which of the following will not be reduced by $H_2$?

Which position for hydrogen explains all its properties?

Isotope$(s)$ of hydrogen which emits low energy $\beta^{-}$ particle with $t_{1/2}$ value $> 12 \ years$ is/are :

The incorrect statement among the following is:

Write the names of the isotopes of hydrogen. What is the mass ratio of these isotopes?

Identify the correct statements from the following:
$i$. Reaction of hydrogen with fluorine occurs even in dark.
$ii$. Manufacture of ammonia by Haber process is an endothermic reaction.
$iii$. $HF$ is an electron-rich hydride.