Secondary alcohols on heating with copper at `300^(@)C` give,

Options

A. Alkenes
B. Aldehydes
C. Ketones
D. tert-alcohols

Explanation

To solve the question regarding the reaction of secondary alcohols when heated with copper at 300°C, we can follow these steps:

### Step-by-Step Solution:

1. **Identify Secondary Alcohol**:
- A secondary alcohol has the general structure R-CHOH-R', where R and R' are hydrocarbon groups.

2. **Understand the Reaction Conditions**:
- The question states that the secondary alcohol is heated with copper at a temperature of 300°C. Copper acts as a catalyst in this reaction.

3. **Reaction Type**:
- Heating secondary alcohols with copper leads to oxidation. In organic chemistry, oxidation refers to the loss of hydrogen or the gain of oxygen.

4. **Oxidation of Secondary Alcohol**:
- When a secondary alcohol undergoes oxidation, it loses the hydroxyl (-OH) group and forms a carbonyl group (C=O). This results in the formation of a ketone.
- The general reaction can be represented as:
\[ R-CHOH-R' \xrightarrow{Cu, 300°C} R-CO-R' \]
- Here, R-CO-R' represents the ketone formed from the secondary alcohol.

5. **Conclusion**:
- Therefore, the product of heating secondary alcohols with copper at 300°C is a ketone.

### Final Answer:
Secondary alcohols on heating with copper at 300°C give **ketones**.

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