18178 \(Me - C \equiv C - C{H_2} - COCl\xrightarrow{{{H_2}/Pd - C}}\)
18275 \(2 - Hexyne\) can be converted into trans- \(2 - hexene\) by the action of
Birch reduction
18440 Which of the following can not react with Bayer's reagent
18441 Major product will be