" Dihydrogen of high purity "(>99.95%)" is obtained through "

Boron of highest purity (~99.9%) is obtained by

Boron of highest purity (~99.9%) is obtained by

Boron and silicon of very high purity can be obtained through :

Boron and silicon of very high purity can be obtained through :

Assertion : Hydrogen cannot be prepared in laboratory. Reason : Hydrogen of high purity is obtained by electrolysing warm aqueous barium hydroxide between Nickel electrods.

How is hydrogen of high purity prepared?

High purity copper is obtained by