A first row transition metal (M) does not liberate H₂ gas from di… | JEE Main 2026 Chemistry PYQ

MCQMediumJEE Main 2026 · 22 January, Shift 1Transition Elements Properties

A first row transition metal (M) does not liberate $\mathrm{H_2}$ gas from dilute HCl. $1$ mol of aqueous solution of $\mathrm{MSO_4}$ is treated with excess of aqueous KCN and then $\mathrm{H_2S(g)}$ is passed through the solution. The amount of $\mathrm{MS}$ (metal sulphide) formed from the above reaction is _____ mol.

A
$1$
B
$0$
C
$2$
D
$3$

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