NEET Chemistry Organic Preparations Assertion Reason Question
Assertion (A): The evolution of violet vapors when MnO2 is added to a reaction mixture containing NaI and H2SO4 indicates the presence of iodide ions.
Reason (R): The violet vapors are due to the formation of iodine, which is soluble in organic solvents.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false.
Correct Answer
Detailed Explanation
When MnO2 is added to a reaction mixture containing NaI and H2SO4, iodine (I2) is formed, which appears as violet vapors. This is an indication of the presence of iodide ions, and the iodine dissolves in organic solvents like CHCl3, confirming the assertion.
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