Unit-iii-POC-I

SN1 reactions proceed via formation of:

• Free radical

• Carbocation

• Carbanion

• Carbene

The rate of SN1 reaction depends on:

• Nucleophile concentration

• Solvent polarity

• Substrate concentration

• Both B and C

Which alkyl halide shows highest reactivity in SN1?

• Methyl halide

• Primary halide

• Secondary halide

• Tertiary halide

Which of the following favors SN2 reaction?

• Tertiary halide

• Polar protic solvent

• Primary halide

• Stable carbocation

SN2 reactions lead to:

• Retention of configuration

• Racemization

• Inversion of configuration

• Rearrangement

Which factor decreases SN1 rate?

• Polar protic solvent

• Stable carbocation

• Steric hindrance

• Weak nucleophile

Carbocation rearrangement occurs in:

• SN1 reactions

• SN2 reactions

• E2 reactions

• Free radical substitution

In SN2 mechanism, the nucleophile attacks:

• From front side

• From both sides

• From opposite side

• No attack

Ethyl chloride is primarily used as:

• Antiseptic

• General anesthetic

• Local anesthetic

• Insecticide

Chloroform on oxidation forms:

• Phosgene

• Ethanol

• Acetone

• Carbon monoxide