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A white solid imparts a violet colour to a Bunsen flame. On being heated with concentrated H2SO4, thQualitative and Quantitative Analysis Chemistry Question

Question

A white solid imparts a violet colour to a Bunsen flame. On being heated with concentrated H2SO4, the solid gives violet vapours that turns starch paper blue. The salt may be:

Answer: B

💡 Solution & Explanation

A violet flame indicates K+. Violet vapours with conc. H2SO4 turning starch paper blue indicate I2 (from an iodide). Hence, KI.

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