Given below are two statements : Statement (I) : Oxidising power of halogens decreases in the order $\mathrm{F}_{2}>\mathrm{Cl}_{2}>\mathrm{Br}_{2}>\mathrm{I}_{2}$, which is the basis of "Layer test". Statement (II): "Layer test" to identify $\mathrm{Br}_{2}$ and $\mathrm{I}_{2}$ in aqueous solution involves the oxidation of bromide or iodide into $\mathrm{Br}_{2}$ or $\mathrm{I}_{2}$ respectively with $\mathrm{Cl}_{2}$, which is a type of displacement redox reaction. In the light of the above statements, choose the correct answer from the options given below :

(A) Both Statement I and Statement II are true

(B) Both Statement I and Statement II are false

(C) Statement I is true but Statement II is false

(D) Statement I is false but Statement II is true

JEE Main · 2026 · 02 Apr 2026 · Shift 1 · p-Block Elements

Given below are two statements :

Statement (I) : Oxidising power of halogens decreases in the order

F_{2} > Cl_{2} > Br_{2} > I_{2}

, which is the basis of "Layer test".

Statement (II): "Layer test" to identify

Br_{2}

and

I_{2}

in aqueous solution involves the oxidation of bromide or iodide into

Br_{2}

I_{2}

respectively with

Cl_{2}

, which is a type of displacement redox reaction.

In the light of the above statements, choose the correct answer from the options given below :

Answer: (A)

The oxidising power of the halogens decreases as

F_{2} > C l_{2} > B r_{2} > I_{2}

, and because

C l_{2}

is a stronger oxidant than

B r_{2}

I_{2}

it can liberate them from their salts, which underlies the layer test. In that test

C l_{2}

oxidises

B r^{-}

B r_{2}

and

I^{-}

I_{2}

, as in

2 NaBr + C l_{2} \to B r_{2} + 2 NaCl

, a displacement redox change. Both statements are true.

JEE Main · 2026 · 02 Apr 2026 · Shift 1 · Single correct option