Which of the following statements concerning protium,deuterium and tritium is not true?

$B_2H_6 + 2NaH \to$ compound $P$. Identify the hybridisation of Boron in compound $P$.

How can the production of dihydrogen,obtained from 'coal gasification',be increased?

Which of the following is a synthesis gas?

Which physical property of dihydrogen $(H_2)$ is wrong?

Identify the reactions in which $H_2$ is liberated? $(i)$ $Zn + NaOH_{(aq)} \longrightarrow$ $(ii)$ $HCOOH \xrightarrow[\text{Conc. } H_2SO_4]{373 \ K}$ $(iii)$ $CH_{4(g)} + H_2O_{(g)} \xrightarrow[Ni]{1270 \ K}$ $(iv)$ $Zn + H^+_{(aq)} \longrightarrow$ $(v)$ $C_{(s)} + H_2O_{(g)} \xrightarrow{1270 \ K}$