JEE Main 2026 · 2 Apr · Shift 1 · Chemistry Q60

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ChemistrySingle correct+4 / -1Question 60 of 75

Given below are two statements :

Statement (I) : Oxidising power of halogens decreases in the order $\ce{F2} > \ce{Cl2} > \ce{Br2} > \ce{I2}$ , which is the basis of "Layer test".

Statement (II) : "Layer test" to identify $\ce{Br2}$ and $\ce{I2}$ in aqueous solution involves the oxidation of bromide or iodide into $\ce{Br2}$ or $\ce{I2}$ respectively with $\ce{Cl2}$ , which is a type of displacement redox reaction.

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

Both Statement I and Statement II are true

Both Statement I and Statement II are false

Statement I is true but Statement II is false

Statement I is false but Statement II is true

Answer and worked solution

Official answer: A

Statement I. Oxidising power falls $\ce{F2 > Cl2 > Br2 > I2}$ , so chlorine can displace bromine and iodine from their salts. This is the basis of the layer test: true.

Statement II. Chlorine water oxidises $\ce{Br-}$ / $\ce{I-}$ to $\ce{Br2}$ / $\ce{I2}$ , which colour the organic layer orange-brown or violet. This is a displacement redox reaction: true.

(A)

Topics:Group 17 Anion analysis

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JEE Main 2026 · 2 Apr · Shift 1, Chemistry question 60