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Q.

Methyl acetylene is also known as:


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a

Butyne

b

Propyne

c

Ethyne

d

Pentyne 

answer is B.

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Detailed Solution

concept - The compounds whose name ends with ‘yne’ are alkynes and they are characterized by the presence of at least one triple bond in their structure.
The molecular formula of methyl acetylene is C3H4. The chemical structure is-
Question ImageAs can be seen, the structure of methyl acetylene has three carbon atoms and two of them are bonded via a triple bond.  Propyne is an alkyne with three carbon atoms and one triple bond
Acetylene is the name given to ethyne and as CH3 can be seen as a substituent for acetylene, the propyne is also referred to as methyl acetylene.
Hence, the correct option is (2).
 
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