Statement-I: Ketones are less reactive than aldehydes.
Because
Statement-II: Ketones do not give Schiff's test.

Options

A. (a)Statement-I is True, Statement-II is True : Statement-II is a correct explanation for Statement-I
B. (b)Statement-I is True, Statement-II is True : Statement-II is `NOT` a correct explanation for Statement-I
C. (c)Statement-I is True, Statement-II is False.
D. (d)Statement-I is False, Statement-II is True.

Answer

To analyze the statements provided in the question, we will break down the information step by step.

### Step-by-Step Solution

**Step 1: Understanding the Reactivity of Aldehydes and Ketones**
- Aldehydes (e.g., acetaldehyde, CH3CHO) are generally more reactive than ketones (e.g., acetone, CH3COCH3) in nucleophilic addition reactions. This is primarily due to the presence of one alkyl group (methyl in this case) in aldehydes, which has a weaker +I (inductive) effect compared to ketones that have two alkyl groups.

**Hint for Step 1:** Remember that the number of alkyl groups attached to the carbonyl carbon affects the electron density and reactivity.

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**Step 2: Analyzing the Inductive Effect**
- In aldehydes, the carbonyl carbon is bonded to one alkyl group and one hydrogen atom. The alkyl group can donate some electron density to the carbonyl carbon, making it slightly more positive and susceptible to nucleophilic attack.
- In ketones, the carbonyl carbon is bonded to two alkyl groups, which donate more electron density. This reduces the positive character of the carbonyl carbon, making it less reactive towards nucleophiles.

**Hint for Step 2:** Consider how the number of electron-donating groups (alkyl groups) influences the positive charge on the carbonyl carbon.

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**Step 3: Evaluating the Schiff's Test**
- The Schiff's test is a qualitative test used to detect the presence of aldehydes. When aldehydes react with Schiff's reagent, a color change occurs, indicating a positive result.
- Ketones do not give a positive result in the Schiff's test, which is a distinguishing feature between aldehydes and ketones.

**Hint for Step 3:** Recall that Schiff's test is specific for aldehydes and does not yield a color change with ketones.

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**Step 4: Conclusion on the Statements**
- **Statement I:** "Ketones are less reactive than aldehydes." This statement is true based on the inductive effect and the number of alkyl groups.
- **Statement II:** "Ketones do not give Schiff's test." This statement is also true since Schiff's test is specific for aldehydes.

**Step 5: Analyzing the Relationship Between the Statements**
- While both statements are true, Statement II does not explain Statement I. The reason ketones are less reactive than aldehydes is due to the difference in the number of alkyl groups and their inductive effects, not simply because they do not give Schiff's test.

**Final Conclusion:**
- Both statements are true, but Statement II is not a correct explanation for Statement I. Therefore, the answer is: Statement 1 is true, Statement 2 is true, but Statement 2 is not the correct explanation for Statement 1.

### Final Answer:
**Option B:** Statement 1 is true, Statement 2 is true, but Statement 2 is not the correct explanation for Statement 1.

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