Calorific value of carbohydrates, proteins & fats are

Options

A. `4 : 6 : 9 `
B. `6:4:9`
C. `4:4:9`
D. `4:9:9`

Answer

To determine the calorific values of carbohydrates, proteins, and fats, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the calorific value of carbohydrates:**
- Carbohydrates provide 4 calories per gram.
- Therefore, the calorific value for carbohydrates = 4 calories.

2. **Identify the calorific value of proteins:**
- Proteins also provide 4 calories per gram.
- Therefore, the calorific value for proteins = 4 calories.

3. **Identify the calorific value of fats:**
- Fats provide 9 calories per gram.
- Therefore, the calorific value for fats = 9 calories.

4. **Establish the ratio:**
- Now that we have the calorific values:
- Carbohydrates: 4 calories
- Proteins: 4 calories
- Fats: 9 calories
- We can express this as a ratio:
- Carbohydrates : Proteins : Fats = 4 : 4 : 9.

5. **Select the correct option:**
- Among the given options, the correct one that matches our calculated ratio (4:4:9) is option C.

### Final Answer:
The calorific values of carbohydrates, proteins, and fats are in the ratio of **4 : 4 : 9**.

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