ECONOMICS
HUMAN CAPITAL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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____ can be used to run a steam engine
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iron
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gold
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coal
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copper
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Explanation:
Detailed explanation-1: -The force produced by steam is used in the working of the steam engine. Steam is produced by burning coal. Coal is used to generate steam because as it has a high calorific value and easy to use.
Detailed explanation-2: -Steam coal (sometimes called thermal coal) is a grade of coal used in electric power plants to generate steam to create electricity. Most of the coals mined in the United States are steam coals.
Detailed explanation-3: -steam engine, machine using steam power to perform mechanical work through the agency of heat.
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