A) Baeyer's reagent
B) Tollen's reagent
C) Hager's reagent
D) None of these
Correct Answer: B
Solution :
Ethyne gives white precipitate of silver acetylide on reaction with Tollen's reagent but ethene does not react with Tollen's reagent. \[\underset{ethyne}{\mathop{\underset{CH}{\overset{CH}{\mathop{|||}}}\,}}\,+\underset{\begin{smallmatrix} Tollen's \\ reagent \end{smallmatrix}}{\mathop{A{{g}_{2}}O}}\,\xrightarrow[{}]{{}}\underset{white\,ppt.}{\mathop{\underset{CAg}{\overset{CAg}{\mathop{|||}}}\,}}\,+{{H}_{2}}O\] \[\underset{C{{H}_{2}}}{\overset{C{{H}_{2}}}{\mathop{|||}}}\,+A{{g}_{2}}O\xrightarrow[{}]{{}}No\text{ }reaction\]
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