Question

a substance that can be used to produce heat energy at a reasonable cost is known as ______________​

Answer 1

Answer:

fuel

Explanation:

Answer 2

A 'substance' that can be used to 'produce heat energy' at a reasonable cost is known as 'fuel'.

Explanation:

• The fuel is required to produce the heat energy at the reasonable cost. The fuel like kerosene, liquid petroleum gas, liquid petrol and crude oil  is used to produce the heat energy at a reasonable cost.
• The heat energy is used in various facilities like transportation, food preparation, and various industrial application especially in mechanical, automobile, food industries and chemical industries.

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