Question

Assertion (A): Following are the members of a homologous series :
CH,OH, CH,CH,OH, CH,CH,CH,OH
Reason (R) : A series of compounds with same functional group but
differing by - CH, - unit is called a homologous series.​

Answer 1

Answer:

Both statement and reason are incorrect

Explanation:homologous series differ by CH2-unit

Answer 2

Question - Assertion (A): Following are the members of a homologous series :

CH3OH, CH3CH2OH, CH3CH2CH2OH

Reason (R) : A series of compounds with same functional group but

differing by - CH2 - unit is called a homologous series.​

Answer - Both assertion and reason are true.

Homologous series in chemistry are defined as the compounds of same group differing only by number of alkyl groups.

The group represented in question is alcohol group marked by presence of -OH group.

Two succesive homologues always differ by single alkyl group which is CH2.

The change in number of alkyl groups effects physical properties of compounds.