Question

True or False

$S_1$ : Interstitial compounds have high melting points, higher than those of pure metals.

$S_2$ : Permanganate titration in presence of hydrochloric acid are unsatisfactory.

$S_3$ : $KMn{O}_4$ does not act as an oxidizing agent in strong alkaline medium.

$S_4$ : $KMn{O}_4$ on heating in a current of $H_2$ gives $MnO$.

• A. T T F T
• B. T F F T
• C. T F T T
• D. F F T F

Answer 1

The correct option is A

T T F T

$S_1$ : Due to strong interatomic forces, they have high melting points.

$S_2$ : Some of the hydrochloric acid is oxidized to chlorine.

$S_3$ : $Mn{O}_4^{-}+e^{-}\stackrel{O{H}^{-}}{\to }Mn{O}_4^{2-}$

$S_4$ : $2KMn{O}_4+5H_2\to 2KOH+2MnO+4H_{2}O$