A) Baeyers
B) carbyl amine
C) Lassaignes
D) silver mirror
Correct Answer: A
Solution :
Baeyers reagent and \[B{{r}_{2}}\] water is used for the identification of unsaturation. When unsaturated compound reacts with Baeyers reagent \[(Alk.KMn{{O}_{4}})\] and \[B{{r}_{2}}\]water. The colour of Baeyers reagent and \[B{{r}_{2}}\]water is discharged e.g., \[\underset{C{{H}_{2}}}{\mathop{\underset{|\,\,|}{\mathop{C}}\,}}\,{{H}_{2}}+{{H}_{2}}O+O\xrightarrow[KMn{{O}_{4}}]{Alk.}\underset{1-thylene\,glycol}{\mathop{\underset{C{{H}_{2}}OH}{\mathop{\underset{|\,\,|}{\mathop{C}}\,}}\,{{H}_{2}}OH}}\,\]
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