The gaseous product$(s)$ expected at room temperature by the reaction of sodium borohydride and boron trifluoride under anhydrous conditions is/are:

Which of the following acids exhibits oxidizing,reducing,and complex-forming properties?

Which of the following statements is incorrect?

From which source is the maximum amount of hydrogen obtained?

Calcium imide on hydrolysis will give gas $(B)$ which on oxidation by bleaching powder gives gas $(C)$. Gas $(C)$ on reaction with magnesium gives compound $(D)$. $(D)$ on hydrolysis gives again gas $(B)$. $(B)$,$(C)$ and $(D)$ are

In the following reaction,assign the state for the underlined atom in the product of complete hydrolysis at $R.T.$:
$\underline{B}_2H_6 + H_2O \longrightarrow H_3BO_3 + H_2 \uparrow$