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a
Alcoholic HCN;NaOCl;ZnCl2/HCl
b
Br2/water;ZnCl2/HCl;NaOCl
c
ZnCl2/HCl;FeCl3;Alcoholic HCN
d
Br2/water;ZnCl2/HCl;FeCl3
answer is D.
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Detailed Solution
Novestral [anti futility drug]Which de colourised Br2+H2O due to −C≡C− and reacts with ZnCl2+HCl presence of 3º alcohol group, and also gives +ve FeCl3 neutral test presence of phenolic group