NEET Chemistry Organic Preparations MCQ Question
Which of the following statements about organic preparations involving iodides and sulfuric acid is correct?
Iodine is evolved when NaI reacts with concentrated sulfuric acid and manganese dioxide.
Adding sodium carbonate to a solution containing iodide ions will yield a yellow precipitate.
The presence of iodide ions can be confirmed by the formation of a violet color in the organic layer when shaken with chloroform.
Sulfur dioxide is the only gas evolved when NaI reacts with concentrated sulfuric acid.
Correct Answer
Detailed Explanation
The reaction between NaI and concentrated sulfuric acid along with manganese dioxide does indeed produce iodine, which is a characteristic of this organic preparation. The other statements contain inaccuracies regarding the expected reactions.
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