NEET Chemistry Organic Preparations MCQ Question
Which of the following statements about organic preparations involving iodide ions and manganese dioxide is correct?
The reaction of NaI with MnO2 and H2SO4 produces iodine as a violet vapor.
Iodide ions can only be detected in acidic conditions using silver nitrate.
Chlorine gas can be used to confirm the presence of iodide ions in an organic solvent.
The heating of NaI with manganese dioxide yields a yellow gas with no color change in solution.
Correct Answer
Detailed Explanation
The reaction of NaI with MnO2 and H2SO4 does produce iodine, which is observed as violet vapors, indicating the presence of iodide ions. This is consistent with the NCERT context provided.
Found an issue with this question?
Related Questions
More from Organic Preparations
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....
Assertion (A): The presence of iodide ions can be confirmed by the violet color in the organic layer. | Reason (R): Iodine dissolves in the organic so...
More from
What white precipitate is formed when calcium chloride solution is added to an acidified sodium carbonate extract containing oxalate ions?
Which of the following statements about functional group tests are correct?
Which of the following combinations correctly describes tests related to functional groups in qualitative analysis?