Question:
Which of the following statements is correct regarding homologous series?
Which of the following statements is correct regarding homologous series?
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Members of a homologous series have the same functional group and differ successively by a CH2 unit.
Updated On: Nov 12, 2026
- It has same functional group and the successive members differ by \(-\text{CH}_{2}-\)group.
- It possesses the same physical properties.
- It has compounds with the same number of carbon atoms.
- It has members of various functional groups.
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept
A homologous series is a family of organic compounds with the same functional group and similar chemical properties.
Step 2: Key feature
Successive members differ by a \(-\text{CH}_2-\) group, which is a mass difference of 14 u.
Step 3: Eliminate
Physical properties show a regular gradation, not sameness. Carbon number increases along the series. Members share one functional group, not various ones.
Step 4: Compare the options
Only option (A) is correct.
Final Answer:
A homologous series has the same functional group, with successive members differing by a CH2 group. \[ \boxed{\text{(A) }\text{It has same functional group and the successive members differ by }-\text{CH}_{2}-\text{ group.}} \]
A homologous series is a family of organic compounds with the same functional group and similar chemical properties.
Step 2: Key feature
Successive members differ by a \(-\text{CH}_2-\) group, which is a mass difference of 14 u.
Step 3: Eliminate
Physical properties show a regular gradation, not sameness. Carbon number increases along the series. Members share one functional group, not various ones.
Step 4: Compare the options
Only option (A) is correct.
Final Answer:
A homologous series has the same functional group, with successive members differing by a CH2 group. \[ \boxed{\text{(A) }\text{It has same functional group and the successive members differ by }-\text{CH}_{2}-\text{ group.}} \]
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