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Statement-1: Benzaldehyde gives negative...

Statement-1: Benzaldehyde gives negative Benedict's test
and
Statement-2: Aldehydes do not respond positively with Benedicts reagent.

A

Statement-1 is True, Statement-2 is true, statement-2 is a correct explanation for statement-1

B

Statement -1 is true, Statement-2 is true, statement-2 is not a correct explanation for statement-1

C

Statement-1 is true, statement -2 is False

D

Statement-1 is False, Statement-2 is true

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the statements provided in the question, we will evaluate each statement regarding their accuracy based on the properties of benzaldehyde and the behavior of aldehydes with Benedict's reagent. ### Step-by-Step Solution: **Step 1: Evaluate Statement 1** - **Statement 1:** "Benzaldehyde gives negative Benedict's test." - **Analysis:** Benzaldehyde (C6H5CHO) is an aromatic aldehyde. The Benedict's test is primarily used to detect reducing sugars and aliphatic aldehydes. Aromatic aldehydes like benzaldehyde do not react with Benedict's reagent because they lack the necessary structure to undergo oxidation. Therefore, benzaldehyde does indeed give a negative Benedict's test. - **Conclusion:** Statement 1 is **True**. **Step 2: Evaluate Statement 2** - **Statement 2:** "Aldehydes do not respond positively with Benedict's reagent." - **Analysis:** This statement is misleading. While it is true that aromatic aldehydes like benzaldehyde do not respond positively to Benedict's reagent, aliphatic aldehydes (like formaldehyde and acetaldehyde) do react positively. The reagent can oxidize these aliphatic aldehydes, leading to a positive test. Therefore, the statement that "aldehydes do not respond positively" is incorrect because it generalizes all aldehydes. - **Conclusion:** Statement 2 is **False**. **Step 3: Determine the Correct Option** - Based on our evaluations: - Statement 1 is True. - Statement 2 is False. - The correct option is that Statement 1 is true and Statement 2 is false. ### Final Answer: The correct option is: **Statement 1 is true, Statement 2 is false.** ---
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Knowledge Check

  • Which of the following compounds give positive test with Tollen's reagent ?

    A
    `H-overset(O)overset(||)(C)-OH`
    B
    C
    `CH_(3)-underset(OH)underset(|)(CH)-OC_(2)H_(5)`
    D
    `CH_(3)-overset(O)overset(||)(C)-H`