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Q.

The IUPAC nomenclature of CH3-CHO is _____________.

 

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a

Propanal

b

Ethanal

c

Butanal

d

Pentanal

answer is B.

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Detailed Solution

The longest chain is of 2 carbon atoms so the root word is Pent. The functional group is – CHO (aldehyde group) so the suffix is nal and the functional group is attached to the first carbon of the chain. Thus the IUPAC nomenclature of the compound is ethanal.

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