Question

Consider the following statements and arrange in the order of true/false as given in the codes.
$S_1$: The addition of chlorine water dropwise to a solution of a bromide liberates free bromine, which colours the solution orange red.
$S_2$: Chlorine gas bleaches the filter paper moistened with yellow dyestuff, fluorescein.
$S_3$: Nitrogen gas is evolved when a solution of nitrate is boiled with zinc dust and sodium hydroxide solution.

• A. TTT
• B. TFT
• C. TFF
• D. TTF

Answer 1

The correct option is D TTF

$S_1$: True, when chlorine water is added to a solution of bromide, free bromine is evolves which colors the solution as orange red.
$2B{r}^{-}+C{l}_2\to B{r}_2\left(\text{orange red colour in water}\right)+2C{l}^{-}$
$S_2$: True, chlorine gas bleaches the filter paper moistened with yellow dyestuff, fluorescein.
$S_3$: False, when a solution of nitrate is boiled with zinc dust and sodium hydroxide solution, ammonia gas evolves.
$N{O}_3^{-}+4Z{n}^{2+}+7O{H}^{-}+6H_{2}O\to N{H}_3\uparrow +4\left[Zn\right(OH{)}_4{]}^{2-}$