Alcohol is mostly metabolised in

Options

A. hallucinogen
B. tranquiliser
C. stimulant
D. depressant

Answer

### Step-by-Step Solution:

1. **Understanding Alcohol Metabolism**: Alcohol is primarily metabolized in the body, and the main organ responsible for this process is the liver.

2. **Role of Liver Cells**: The liver cells contain specific enzymes that are crucial for the breakdown of alcohol. These enzymes are responsible for converting alcohol into less harmful substances.

3. **Key Enzyme - Alcohol Dehydrogenase (ADH)**: The primary enzyme involved in the metabolism of alcohol is called Alcohol Dehydrogenase (ADH). This enzyme catalyzes the conversion of alcohol (ethanol) into acetaldehyde.

4. **Further Breakdown of Acetaldehyde**: After the formation of acetaldehyde, another set of enzymes in the liver further metabolizes acetaldehyde into acetate, which is a less toxic substance.

5. **Impact on the Body**: The metabolism of alcohol affects brain activity. Initially, alcohol can depress the central nervous system, leading to a normalization of brain activity from a heightened state to a more balanced state.

6. **Conclusion**: Therefore, the answer to the question "Alcohol is mostly metabolized in" is the liver.

### Final Answer:
Alcohol is mostly metabolized in the liver.

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