Question

Given below are two statement one is labeled as Assertion (A) and the other is labeled as Reason (R).
Assertion (A): CH₂ = CH – CH₂ – Cl is an example of allyl halide
Reason (R): Allyl halides are the compounds in which the halogen atom is attached to sp² hybridised carbon atom.
In the light of the two above statements, choose the most appropriate answer from the options given below

• A. (A) is true but (R) is false
• B. Both (A) and (R) are true but (R) is not the correct explanation of (A)
• C. (A) is false but (R) is true
• D. Both (A) and (R) are true and (R) is the correct explanation of (A)

Answer 1

The Correct Option is A

The molecule CH₂ = CH – CH₂ – Cl has a halogen attached to an sp³ hybridised carbon, making it an allyl halide. 
Reason (R) incorrectly states that allyl halides have the halogen attached to an sp² hybridised carbon, which is why (R) is false.

Answer 2

The given question involves understanding the structure of organic compounds, particularly allyl halides, and hybridization concepts.

1. Understanding Allyl Halides:
   An allyl halide is a type of organic compound where a halogen atom is attached to a carbon atom that is adjacent to a carbon-carbon double bond. The general structure of allyl halides is CH₂=CH-CH₂-X, where X is a halogen.
2. Analyzing Assertion (A):
   The compound CH₂=CH-CH₂-Cl matches the general structure of an allyl halide where chlorine (Cl) is the halogen. Therefore, Assertion (A) is true as it correctly defines CH₂=CH-CH₂-Cl as an allyl halide.
3. Understanding the Reason (R):
   The Reason (R) states that allyl halides have the halogen attached to an \(\text{sp}^2\) hybridized carbon atom. However, in an allyl halide, the halogen atom is actually attached to an \(\text{sp}^3\) hybridized carbon, which is adjacent to the \(\text{sp}^2\) hybridized carbon of the double bond. Therefore, Reason (R) is false.
4. Conclusion:
   Since Assertion (A) is true and Reason (R) is false, the most appropriate answer is:

(A) is true but (R) is false

In this scenario, recognizing the hybridization of the carbon atoms in organic compounds and the correct structure of allyl halides is crucial for answering the question correctly.