Homologous Series - Isomerism - Structural and Stereoisomerism NEET Questions

Organic Chemistry - Some Basic Principles of Organic Chemistry

Homologous Series - Isomerism - Structural and Stereoisomerism MCQ Questions


7.
The general formula CₙH₂ₙ₋₂ represents:
A.
Alkynes and alkadienes
B.
Alkenes only
C.
Alkanes only
D.
Cycloalkanes
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ANSWER :
A. Alkynes and alkadienes
8.
Which series has the general formula CₙH₂ₙ₊₁OH?
A.
Aldehydes
B.
Alcohols (alkanols)
C.
Ketones
D.
Carboxylic acids
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ANSWER :
B. Alcohols (alkanols)
9.
Members of a homologous series show:
A.
Identical physical and chemical properties
B.
Different chemical properties but similar physical properties
C.
Similar chemical properties and gradual change in physical properties
D.
Random variations in all properties
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ANSWER :
C. Similar chemical properties and gradual change in physical properties
10.
The general formula for aldehydes is:
A.
CₙH₂ₙ₊₁COOH
B.
CₙH₂ₙ₋₂O
C.
CₙH₂ₙ₊₂O
D.
CₙH₂ₙO
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ANSWER :
D. CₙH₂ₙO
11.
Which of the following is NOT a member of the alkane homologous series?
A.
C₅H₁₀
B.
C₄H₁₀
C.
C₂H₆
D.
C₃H₈
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ANSWER :
A. C₅H₁₀
12.
Which is the first member of the alkyne homologous series?
A.
CH₄
B.
C₂H₂
C.
C₃H₄
D.
C₂H₄
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ANSWER :
B. C₂H₂