Q.

When alkyl substituted acetylene undergoes addition with hydrogen in presence of Lindlar's catalyst, the alkene formed is

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a

Trans

b

Cis

c

A mixture of cis and trans

d

In presence of Lindlar's catalyst, addition does not take place

answer is C.

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Detailed Solution

Depending upon the catalyst, substituted alkynes add one molecule of hydrogen to form either cis-or trans-alkene

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