A) cone. \[{{H}_{2}}S{{O}_{4}}\]
B) ammoniacaI \[C{{u}_{2}}C{{l}_{2}}\]
C) ammoniacal \[AgN{{O}_{3}}\]
D) solution of \[B{{r}_{2}}\] in \[CC{{l}_{4}}\]
Correct Answer: D
Solution :
Ammoniacal \[AgN{{O}_{3}}\] and ammoniacal cuprous chloride are used to test the presence of terminal alkyne. \[B{{r}_{2}}\] in \[CC{{l}_{4}}\] is used to test the presence of unsaturation in organic compound. Organic compounds having double or triple bond decolourise the reddish/brown + colour of bromine water.
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