The group reagent for Group-II cations is- P (1) Dil. \( \mathrm{HC...

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The group reagent for Group-II cations is-
P
(1) Dil. \( \mathrm{HCl} \) only
W
(2) \( \mathrm{H}_{2} \mathrm{~S} \) gas only
(3) \( \mathrm{H}_{2} \mathrm{~S} \) gas in presence of dil. \( \mathrm{HCl} \)
(4) \( \mathrm{NaOH} \)
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