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प्रश्न
Which of the following is the best reagent to distinguish between ethylene and acetylene?
P Bromine water
Q Ammoniacal silver nitrate solution
R Acidified potassium dichromate solution
विकल्प
Only P
Only Q
Both P and Q
Both Q and R
MCQ
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उत्तर
Only Q
Explanation:
Ammoniacal silver nitrate solution reacts with acetylene to form a precipitate of silver acetylide, but ethylene does not react.
Bromine water is decolourised by both ethylene and acetylene, so it cannot distinguish them.
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