Question

$A+H_{2}O\to NaOH$
$A+O_2\stackrel{{400}^{o}C}{\to }B\underset{{25}^{o}C}{\overset{H_{2}O}{\to }}NaOH+O_2$
Which of the statement is false regarding $B$?

• A. $B$ turns green chromic salt solution to yellow
• B. $B$ can be used to purify the air in submarines
• C. When crystallised from solution $B$ is obtained as an anhydrous compound
• D. $B$ can be used as oxidizing agent

Answer 1

Answer: (A)

Here in given reactions $A$ is $NaH$

$NaH+O_2\stackrel{{400}^{0}c}{⟶}{Na}_{2}O$

$\to$ ${Na}_{2}O$ in the crystalline state it is a anhydrous compound

$\to$ due to its less stability it acts as a oxidizing agent

$\to$ used to purify the air in submarines

Ans :- Option $A$.