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JEE Advanced Model Paper 19 with solutions for online practice

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Paragraph for Question Nos. 13 to 15

Group II cations are detected in the following way.

Group II ppt. + yellow ammonium sulphide

→

50°−60°C,Δ

Residue + Filtrate

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Question : 15 of 60

Marks: +1, -0

On treatment with dil. HCl the thio complexes decompose to

sparingly soluble sulphates
sparingly soluble sulphites
sparingly soluble thiosulphates
sparingly soluble sulphides

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