JEE Main 2026 — Jan 24, Shift 1 — Chemistry solution

JEE Main2026Jan 24, Shift 1Chemistry

Consider three metal chlorides x, y and z, where x is water soluble at room temperature, y is sparingly soluble in water at room temperature and z is soluble in hot water. x, y and z are respectively

A
$M g C l_{2}$ , $A g C l$ and $A l C l_{3}$
B
$A g C l$ , $H g_{2} C l_{2}$ and $P b C l_{2}$
C
$A l C l_{3}$ , $P b C l_{2}$ and $B a C l_{2}$
D
$C u C l_{2}$ , $A g C l$ and $P b C l_{2}$

Solution

Matching each chloride to its solubility behaviour:

$C u C l_{2}$ : freely soluble in cold water at room temperature → matches x.

$A g C l$ : only sparingly soluble in water (and insoluble in dilute acids) → matches y.

$P b C l_{2}$ : only slightly soluble in cold water, but dissolves appreciably in hot water → matches z.

Eliminating the other options: $A l C l_{3}$ and $M g C l_{2}$ are highly water soluble (not sparingly), and $B a C l_{2}$ is freely soluble in cold water (does not need heating).

$∴$ Option (4) is correct.

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