Tetravalency of Carbon: Shapes of Simple Molecules NEET Questions

Organic Chemistry - Some Basic Principles of Organic Chemistry

Tetravalency of Carbon: Shapes of Simple Molecules MCQ Questions


1.
The hybridisation of carbon atoms in C–C single bond of HC≡C–CH=CH₂ is:
A.
sp²–sp³
B.
sp³–sp²
C.
sp³–sp³
D.
sp–sp²
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ANSWER :
D. sp–sp²
2.
Which of the following has the maximum s-character in the hybrid orbital of carbon?
A.
Ethyne
B.
Methane
C.
Ethene
D.
Ethane
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ANSWER :
A. Ethyne
3.
The shape of methyl carbocation (CH₃⁺) is:
A.
Pyramidal
B.
Trigonal planar
C.
Tetrahedral
D.
Linear
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ANSWER :
B. Trigonal planar
4.
The shape of methyl carbanion (CH₃⁻) is:
A.
Trigonal planar
B.
Linear
C.
Pyramidal (distorted tetrahedral)
D.
Square planar
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ANSWER :
C. Pyramidal (distorted tetrahedral)
5.
The total number of σ and π bonds in CH₂=C=CHCH₃ are respectively:
A.
8 and 1
B.
9 and 2
C.
7 and 2
D.
10 and 3
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ANSWER :
B. 9 and 2
6.
The number of σ and π bonds in HC≡C–CH=CH–CH₃ are:
A.
5σ, 2π
B.
8σ, 2π
C.
10σ, 3π
D.
10σ, 2π
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ANSWER :
C. 10σ, 3π