Ideal fuel has ---------- calorific value.

Options

A. low
B. high
C. moderate
D. zero

Answer

**Step-by-Step Solution:**

1. **Understanding Calorific Value**: Calorific value is defined as the amount of heat energy produced when 1 kg of fuel undergoes complete combustion. It is a measure of the energy content of the fuel.

2. **Purpose of Fuel**: The primary purpose of fuel is to convert its chemical energy into heat and other forms of energy when it is burned. This is essential for various applications, including heating, cooking, and powering engines.

3. **Characteristics of Ideal Fuel**: An ideal fuel should have certain characteristics to be effective. One of the most important characteristics is that it should have a high calorific value. A high calorific value means that the fuel can produce a large amount of heat energy when burned, making it more efficient.

4. **Conclusion**: Based on the understanding that an ideal fuel should have a high calorific value to serve its purpose effectively, we can conclude that the ideal fuel has a **high calorific value**.

**Final Answer**: Ideal fuel has **high** calorific value.

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