Electronic Displacement in a Covalent Bond ( Inductive Effect, Electromeric Effect, ... ) NEET Questions

Organic Chemistry - Some Basic Principles of Organic Chemistry

Electronic Displacement in a Covalent Bond ( Inductive Effect, Electromeric Effect, ... ) MCQ Questions


1.
The inductive effect is a:
A.
Temporary effect caused by an attacking reagent
B.
Permanent effect due to polarisation of σ-bond by an adjacent polar bond
C.
Resonance phenomenon in conjugated systems
D.
Effect operating only through π-bonds
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ANSWER :
B. Permanent effect due to polarisation of σ-bond by an adjacent polar bond
2.
The inductive effect becomes negligible after how many bonds from the polar group?
A.
1 bond
B.
3 bonds
C.
2 bonds
D.
5 bonds
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ANSWER :
B. 3 bonds
3.
Which of the following is an electron-WITHDRAWING group via the inductive effect (-I effect)?
A.
–CH₃
B.
–C₂H₅
C.
–NO₂
D.
–C(CH₃)₃
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ANSWER :
C. –NO₂
4.
The order of –I (inductive electron-withdrawing) effect of halogens is:
A.
I > Br > Cl > F
B.
Br > Cl > F > I
C.
Cl > F > Br > I
D.
F > Cl > Br > I
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ANSWER :
D. F > Cl > Br > I
5.
Which carboxylic acid is the strongest acid?
A.
Cl₃CCOOH
B.
ClCH₂COOH
C.
Cl₂CHCOOH
D.
CH₃COOH
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ANSWER :
6.
Inductive effect involves the displacement of:
A.
π-electrons
B.
Unpaired electrons
C.
Lone pair of electrons
D.
σ-electrons
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ANSWER :
D. σ-electrons