Consider the structures 'X' and 'Y' given below : 'X' : a straight chain of four carbons, each bonded with…

Consider the structures 'X' and 'Y' given below : 'X' : a straight chain of four carbons, each bonded with hydrogens (H–C–C–C–C–H, each carbon shown with H above and below), i.e. the butane skeleton drawn with full bond lines. 'Y' : a branched three-carbon chain drawn horizontally (H–C–C–C–H, each shown with H above/below) with an additional CH group (H–C–H, with an H above) branching upward from the structure, i.e. the 2-methylpropane (isobutane) skeleton drawn with full bond lines. Which of the following statements are correct ? (i) 'X' and 'Y' are homologues. (ii) 'X' and 'Y' have the same structural formula, but different molecular formula. (iii) 'X' and 'Y' have the same molecular formula, but different structural formula. (iv) 'X' and 'Y' are structural isomers.

1. (i) and (iii)
2. (i) and (iv)
3. (ii) and (iv)
4. (iii) and (iv)

Solution

Asked in: CBSE

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