Question

1.
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 -CH, - unit is called a homologous series.​

Answer 1

The statement 1 is true but statement 2 is false.

Explanation:

• The alcohols have the general formula of CnH(2n+1)OH.

• So, the alcohols will have the series of formula from the different compounds with difference between the succeeding and preceding molecules being a methylene or CH2 group.

• So these alcohols given above are indeed homologous series.

• There are different other homologous series like alkanes, alkenes, alkynes, aldehydes, ketones, etc.

• Alcohols are one of them.

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Answer 2

Both assertion and reason are true but the reason is not the correct explanation fr the assertion.

Explanation:

• Both assertion and reason are true but the reason is not the correct explanation fr the assertion.
• The general formula of alcohols is CnH2nOH
• "R" represents an alkyl group in the series of alcohol compounds.
• These homologous compounds are methyl, ethyl and propyl respectively.
• Alcohols have homology series of compounds.
• Alkanes, alkenes, alkynes, aldehydes, and ketones are the names of the different homologous series.