The alkene formed as a major product in the above elimination reaction is

• 

• CH₂ = CH₂

• 
• 

The electrophile involved in the above reaction is

• dichloromethyl cation (C⁺HCl )

• dichlorocarbene ( :CCl₂) 

• trichloromethyl anion (C^-Cl₃ )

• formyl cation (C⁺HO)

A solution of (–) –1 – chloro –1 – phenylethane is toluene racemises slowly in the presence of a small amount of SbCl₅, due to the formation of

• carbanion

• Carbene

• Carbocation

• free radical

C.

Carbocation

Because of the planar structure of carbonation, both retention and inversion can take place.

Acetyl bromide reacts with excess of CH₃MgI followed by treatment with a saturated solution of NH₄Cl given

• acetone

• acetyl iodide

• 2- methyl -2- propanol

• acetamide

C.

2- methyl -2- propanol

Acid catalyzed hydration of alkenes except ethene leads to the formation of

• primary alcohol

• secondary or tertiary alcohol

• mixture of primary and secondary alcohols

• mixture of secondary and tertiary alcohols