Question

(4) .................. is the lower homologue of ethanol which is extremely poisonous and
can be lethal If misused.
(a) Propanol (CH,OH)
(b) Methanol (CH,OH)
(0) Butanol (CH,OH)
(d) Denatured Spirit
him oil in the presence of nickel as cataly​

Answer 1

Answer:

butanol. please mark me the brainliest

Answer 2

Methanol $CH_3OH$ is lower homologue of ethanol which is extremely poisonous and  can be lethal If misused.

Explanation:

Homologous series are the group of compounds with same basic chemical formula but differ in the length of their carbon chain. They differ by a  group.

The IUPAC nomenclature of organic compounds are given as follows:

1. Select the longest possible carbon chain.

2. For the number of carbon atom, we add prefix as 'meth' for 1, 'eth' for 2, 'prop' for 3, 'but' for 4, 'pent' for 5, 'hex' for 6, 'sept' for 7, 'oct' for 8, 'nona' for 9 and 'deca' for 10.

3. A suffix 'ol' is added at the end of the name if functional group is -OH.

Lower homologous member of  ethanol $C_2H_5OH$ will be $CH_3OH$  and the iupac name will be methanol.

Learn more about homologous series

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