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In the following questions, a statement ...

In the following questions, a statement of assertion (A) is following by a statement of reason (R )
A : Ethylidene chloride on alkaline hydrolysis gives acetaidehyde.
R: Two chlorine atoms attached with adjacent carbon atom in alkylidene chloride .

A

If both Assertion & Reason are the reason is the correct explanation of the assertion, then mark (1).

B

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark(2).

C

If Assertion is true statement but Reason is false , then mark (3)

D

If both Assertion and Reason are false statements, then mark (4)

Text Solution

AI Generated Solution

The correct Answer is:
To solve the assertion-reason question, we will analyze both the assertion (A) and the reason (R) step by step. ### Step 1: Analyze the Assertion (A) The assertion states that "Ethylidene chloride on alkaline hydrolysis gives acetaldehyde." - **Ethylidene chloride** is chemically represented as CH3CCl2H. It is also known as a geminal dihalide because both chlorine atoms are attached to the same carbon atom. - When ethylidene chloride undergoes alkaline hydrolysis, the hydroxide ion (OH⁻) from the alkaline medium replaces one of the chlorine atoms. This leads to the formation of an intermediate compound. - The reaction proceeds as follows: 1. The hydroxide ion attacks the carbon atom bonded to chlorine, leading to the formation of a hydroxyl group (OH). 2. The remaining chlorine atom can leave, resulting in the formation of a double bond between the carbon and oxygen, yielding acetaldehyde (CH3CHO). Thus, the assertion is **true**. ### Step 2: Analyze the Reason (R) The reason states that "Two chlorine atoms are attached to an adjacent carbon atom in alkylidene chloride." - In the case of ethylidene chloride, both chlorine atoms are indeed attached to the same carbon atom, making it a geminal dihalide. - Therefore, the statement that the chlorine atoms are attached to adjacent carbon atoms is incorrect. Thus, the reason is **false**. ### Conclusion - The assertion (A) is true. - The reason (R) is false. ### Final Answer The correct option is that the assertion is true, but the reason is false. ---
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