Fuels and Combustion MCQs

Question 1

Coal tar (produced by high temperature carbonisation) is the main source of

Accepted Answer

Aromatic compounds

Answer

Alphatic compounds

Answer

Paraffins

Answer

Olefins

Question 2

The main reason for making the copper calorimeter (used in bomb calorimeter) silvery white and shining/polished is to

Accepted Answer

Avoid radiation heat loss

Answer

Minimise its corrosion

Answer

Make it look attractive

Answer

None of these

Question 3

Largest constituent of blast furnace gas is

Accepted Answer

N2

Answer

CO

Answer

CO2

Answer

H2

Question 4

Coke oven gas consists mainly of

Accepted Answer

H2 & CH4

Answer

CO & CO2

Answer

H2 & CO

Answer

CH4 & CO

Question 5

Kopper-Totzek coal gasifier

Accepted Answer

Can give ammonia synthesis gas (H2 + N2)

Answer

Is a moving bed reactor

Answer

Cannot use coking coal

Answer

Operate at very high pressure

Question 6

(64-132) rank coal (ASTM) means a coal with 64%

Accepted Answer

Fixed carbon and having a heat value of 13, 200 BTU/1b

Answer

Ash and a heating value of 13, 200 BTU/1b

Answer

Fixed carbon and a heating value of 132 BTU/1b

Answer

None of these

Question 7

(64-132) rank coal (ASTM) means a coal with 64%

Accepted Answer

Fixed carbon and having a heating value around 13, 200 BTU/1b

Answer

Ash and heating value around 13, 200 BTU/1b

Answer

Fixed carbon and heating value around 132 BTU/1b

Answer

None of these

Question 8

Mineral matter content (M) and ash content (A) in coal are approximately related as

Accepted Answer

M = 1.1A

Answer

M = A

Answer

M = 1.5A

Answer

M = 2A

Question 9

Calorific value of furnace oil is about __________ kcal/kg.

Accepted Answer

10000

Answer

15000

Answer

5000

Answer

20000