Dehydration of oxalic acid with concentrated $H_2SO_4$ produces ............

How do ortho and para hydrogen differ from each other?

At $298.2 \ K$,the relationship between the enthalpy of bond dissociation (in $kJ \ mol^{-1}$) for hydrogen $(E_{H})$ and its isotope,deuterium $(E_{D})$,is best described by:

Deuterium resembles hydrogen in properties but:

Hydrogen can be obtained from water,by the action of water on

Select the correct statement regarding interstitial hydrides.