Vidyalelo
Chemical Engineering · all questions

Fuels And Combustion
practice.

Practice every MCQ with options. Use Show answers when you want the correct option and solution.

498

Questions

1/25

Page

Pick an option on a question to see the right answer and solution.

Incomplete combustion of fuel in the furnace is judged by high __________ of the flue gases.

Select an option to see the answer and solution.

High sulphur content in a fuel __________ of the flue gases.

Select an option to see the answer and solution.

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

Select an option to see the answer and solution.

Coal tar fuel - 200 (CTF 200) is a mixture of

Select an option to see the answer and solution.

Kopper-Totzek coal gasifier (installed in a coal based nitrogeneous fertiliser plant) employs a/an __________ bed gasifier.

Select an option to see the answer and solution.

Which of the following combustibles is absent in blast furnace gas?

Select an option to see the answer and solution.

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

Select an option to see the answer and solution.

A sample of natural gas containing 80% methane (CH4) and rest nitrogen (N2) is burnt with 20% excess air. With 80% of the combustibles producing CO2 and the reminder going to CO, the Orsat analysis in volume percent is

Select an option to see the answer and solution.

Calorific value of gobar gas (containing CH4 = 60%, H2 = 10%, CO2 = 30%) may be about __________ Kcal/Nm3.

Select an option to see the answer and solution.

Calorific value of coal middling generated in coal washeries during washing of coal may be around __________ Kcal/kg.

Select an option to see the answer and solution.

Calorific value of dry wood may be around __________ Kcal/kg.

Select an option to see the answer and solution.

Calorific value of bituminous coal may be around __________ Kcal/kg.

Select an option to see the answer and solution.

Calorific value of a typical dry anthracite coal may be around __________ Kcal/kg.

Select an option to see the answer and solution.

Ash content in the coke produced from a coking coal having 20% ash may be around __________ percent.

Select an option to see the answer and solution.

Pick out the wrong statement.

Select an option to see the answer and solution.

Volatile matter content of metallurgical coke may be around __________ percent.

Select an option to see the answer and solution.

Quantity of coke produced from metallurgical coal may be around __________ percent.

Select an option to see the answer and solution.

Abrasion index of blast furnace coke should be around __________ percent.

Select an option to see the answer and solution.

Which of the following is not a binder for coal briquetting?

Select an option to see the answer and solution.

Natural draught produced by a chimney depends upon the

Select an option to see the answer and solution.