Fuels and Combustion — Test 14

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Question 1

With increase in C/H ratio of a fuel, the dew point of flue gases______________________?

Question 2

Coking time in a commercial high temperature coal carbonisation plant is about ______________ hours?

Question 3

Which of the following would require maximum amount of % excess air for complete combustion ?

Question 4

Which of the following is not a micro component present in coal ?

Question 5

Coke oven gas is a better fuel than blast furnace gas, because of its higher________________?

Question 6

A coal containing high amount of volatile matter will have__________________?

Question 7

High amount of sulphur and phosphorous in coke causes ____________________ ?

Question 8

The calorific value of natural gas is about ______________ kcal/Nm3?

Question 9

Fusion point of coal ash generally varies from 1000 to 1700° C. Ash having fusion point less than _______________ °C is liable to form clinker?

Question 10

Which of the following fuels has the highest calorific value per unit mass (kcal/kg) ?