Which of the following are correct structural isomers of butane ?

Two isomers of butane.

Which of the following is (are) the correct isomer(s) of pentane ?

Draw the structure of isomers of butane.

For the alkane C_4H_10 , which of the following is not correct structure of normal isomer?

Assertion : Following are the structural isomers of butane. Reason : Structural isomers have the same molecular formula but they differ in their structures.

Which of the following compound are structural isomers of C_(6)H_(10)O ? (I) 2-methyl butanal (II) Propyl ethanoate (III) Pentanal

The isomer of n-butane is