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प्रश्न
Two statements are given - one labeled Assertion (A) and the other labeled Reason (R).
Assertion (A): In a homologous series of alcohols, the formula for the second member is C2H5OH and the third member is C3H7OH.
Reason (R): The difference between the molecular masses of the two consecutive members of a homologous series is 144.
पर्याय
Both A and R are true and R is the correct explanation of the Assertion.
Both A and R are true but R is not the correct explanation of the Assertion.
A is true but R is false.
A is false but R is true.
उत्तर
A is true but R is false.
Explanation:
In a homologous series of alcohols, the formula for the second member is C2H5OH and the third member is C3H7OH. The difference between the molecular masses of the two consecutive members of a homologous series is 14.
Hence, the correct answer is the assertion is true and Reason is false.
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संबंधित प्रश्न
Write the molecular formula of first two members of homologous series having functional group – OH
The following vegetables are kept in a basket :
Potato, Tomato, Radish, Brinjal, Carrot, Bottle-gourd
Which two of these vegetables correctly represent the homologous structures?
(A) Carrot and Tomato
(B) Potato and Brinjal
(C) Radish and Carrot
(D) Radish and Bottle-gourd
Write the molecular formula of the third member of the homologous series of carbon compounds with general formula CnHO2n+1OH.
Propane and ethane are ______.
Succeeding members of a homologous series differ by ______.
The phenomenon in which compounds having different structural formulae have the same molecular formula is called _______.
As one ascends in any homologous series, physical properties change gradually.
There are different general molecular formula for all members of the homologous series.
Study and complete the following table:
| Homologous series | Alkane | Alkyne |
| General formula | CnH2n+2 | 1. ______ |
| IUPAC name | 2. ______ | Ethyne |
| Common name | Marsh gas | 3. ______ |
Name the third homologue of aldehydes.
