NEET 2016 Phase 1 · ChemistryPrevious Year Question
Which one of the following statements is correct when is passed through acidified solution?
Answer: (D) (d) Green is formed.. \textbf{Answer:} (d) Green is formed.
- A.(a) The solution turns blue.
- B.(b) The solution is decolourized.
- C.(c) is reduced.
- D.(d) Green is formed.✓
Correct Answer
(D) (d) Green is formed.
Solution & Explanation
\textbf{Answer:} (d) Green is formed. \textbf{Solution:} Acidified dichromate is a strong oxidising agent. It oxidises (S goes from +4 to +6) and is itself reduced, from +6 to +3: The product is green, so the orange solution turns green. Since is oxidised (not reduced), option (c) is wrong; the solution does not turn blue or decolourise, ruling out (a) and (b).
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