Question

Correct statements regarding alkyl halides (R–X) among the following are:

• Alcohol being less polar solvent as compared to water, alcoholic KOH favours elimination reaction with R–X.
• Order of reactivity towards $S_N1$ mechanism is $C_6H_5-CH_2-Cl>C_6H_5-CHCl-C_6H_5$.
• Non-substituted aryl halides exhibit properties similar to alkyl halides.
• Vinyl chloride is an example of haloalkene and allyl chloride is an example of haloalkyne.
• $R-Cl$ can be prepared by reacting $R-OH$ with $SOCl_2$ but $Ar-OH$ cannot be prepared by reacting $Ar-OH$ with $SOCl_2$.

• A. A, B and C Only
• B. B and D Only
• C. A and E Only
• D. D and E Only

Answer 1

The Correct Option is A

Step 1: Alcohols and their effect on alkyl halides.
Alcohols are less polar than water, so alcoholic KOH is a better solvent for elimination reactions like $E2$ and $S_N1$ than water.
Step 2: Reactivity order for $S_N1$ mechanism.
The order of reactivity for $S_N1$ follows the nucleophilicity principle, with aryl groups generally leading to a higher reactivity.
Step 3: Vinyl and allyl halides.
Vinyl halides and allyl halides undergo different reaction mechanisms compared to alkyl halides. Final Answer: \[ \boxed{\text{(A) A, B and C Only}} \]