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Question

The distinguishing test for triple bond containing acidic hydrogen is


Correct Answer
A
[Cu(NH3)2]+OH
Your Answer
B
Br2 in CCl4
Your Answer
C
Alkaline KMnO4
Your Answer
D
AlCl3

Solution

The correct option is A [Cu(NH3)2]+OH
The terminal alkynes (has acidic hydrogen) react with ammoniacal solution of cuprous chloride [Cu(NH3)2]+OH to give a red precipitate.
 

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