AIIMS2004Chemistry-Qualitative Analysis

AIIMS 2004 Chemistry Precipitation Reactions Assertion Reason Question

Type: Assertion Reason-conceptual-Medium-Class 12

Assertion : Sb (III) is not precipitated as sulphide when in its alkaline solution H₂S is passed.

Reason : The concentration of S²⁻ ion in alkaline medium is inadequate for precipitation.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false

Correct Answer

Option C

Detailed Explanation

Sb(III) is a basic radical of IIB group for which group reagent is H2S in presence of dilute HCl. It is necessary to maintain the proper hydrogen ion concentration.

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