chem

Question 1

Primary fuels are defined as fuels that:

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1

Question 2

What are 'fossil fuels' described as being formed from?

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Question 3

Which type of coal has the highest percentage of carbon among the examples given?

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3

Question 4

What characteristic of a fuel is related to the presence of non-combustible matter like ash?

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Question 5

What is the primary definition of a fuel based on its main constituent and the heat it produces when burned?

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1

Question 6

What is the ideal ignition temperature for a fuel, according to the text?

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2

Question 7

Why is a low ignition temperature considered dangerous for fuel storage and transport?

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Question 8

What does 'calorific value' of a fuel measure?

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Question 9

According to the text, what are the two main sources from which fuel is derived?

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2

Question 10

Higher or Gross Calorific Value (HCV) considers the heat produced when the products of combustion are cooled to what temperature?

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Question 11

Which of the following is an example of a secondary fuel?

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Question 12

Which two elements are most crucial in determining the calorific value of a fuel?

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Question 13

How are primary and secondary fuels further classified based on their physical state?

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Question 14

What is coal primarily described as being composed of?

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Question 15

A good fuel should ideally have a calorific value that is:

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2

Question 16

What is the relationship between a Kilocalorie and calories?

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Question 17

How many calories are approximately equal to 1 BTU?

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Question 18

What is the definition of a British Thermal Unit (BTU)?

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Question 19

Lower or Net Calorific Value (LCV) is the heat produced when the products of combustion are:

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2

Question 20

What is the definition of a 'calorie' as a unit of heat?

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2