Electronic Displacement in a Covalent Bond ( Inductive Effect, Electromeric Effect, ... ) NEET Study Material and Notes, NEET Electronic Displacement in a Covalent Bond ( Inductive Effect, Electromeric Effect, ... ) PDF

Organic Chemistry - Some Basic Principles of Organic Chemistry

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

13.

The C-1 in CH₃–CH₂–Cl carries δ+ charge, while C-2 carries:

δδ+ charge (smaller positive than δ+)

δ⁻ charge

No charge

δδ⁻ charge

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14.

The electromeric effect (E-effect) is:

A temporary effect involving complete transfer of π-electrons in presence of an attacking reagent

A permanent effect involving π-electrons

A permanent effect involving σ-electrons

A delocalisation of σ-electrons into a vacant p orbital

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15.

In +E (positive electromeric) effect, the π-electrons are transferred:

Away from the attacking reagent

To the atom to which the reagent does NOT attach

To the atom to which the reagent attaches

Equally to both atoms

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16.

In –E (negative electromeric) effect, the π-electrons are transferred:

Toward the atom carrying the attacking reagent

There is no electron transfer

To both atoms equally

Away from the atom to which the attacking reagent gets attached

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17.

When inductive and electromeric effects operate in opposite directions:

Inductive effect predominates

Electromeric effect predominates

Both cancel out

Resonance dominates

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18.

The electromeric effect is shown only when:

There is a polar σ-bond

The molecule contains a lone pair

There is a multiple (π) bond AND an attacking reagent is present

The molecule is heated

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