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Questions and Answers
What is the significance of lower moisture content in coal?
What is the significance of lower moisture content in coal?
- It decreases the carbon content of coal.
- It increases the calorific value of coal. (correct)
- It reduces the fixed carbon content of coal.
- It enhances the quality of ash in coal.
Why is the presence of nitrogen considered undesirable in coal?
Why is the presence of nitrogen considered undesirable in coal?
- Nitrogen has no calorific value. (correct)
- Nitrogen contributes to the ignition temperature of coal.
- Nitrogen causes corrosion of equipment.
- Nitrogen has high calorific value.
How does the presence of high volatile matter affect the combustion of coal?
How does the presence of high volatile matter affect the combustion of coal?
- It causes a large proportion of matter to escape unburnt. (correct)
- It reduces the ash content in coal.
- It increases the calorific value of coal.
- It improves the flow of air and heat in the furnace.
