Coal tar fuels (CTF) as compared to petroleum based fuel oils have higher __________________?

A. Calorific value
B. Higher C/H ratio
C. Sulphur content
D. Difference in gross & net calorific value

With increase in the oxygen content of the coal, its ______________ decreases?

A. Calorific value
B. Caking power
C. Both A. & B.
D. Neither A. nor B.

The calorific value of ‘LPG’ (50% propane + 50% butane) is about ______________ kcal/Nm3?

A. 5000
B. 25,000
C. 10,000
D. 15,000

Fuel for a nuclear reactor (thermal) is ____________________?

A. Uranium
B. Plutonium
C. Radium
D. None of these

Presence of free moisture in coal is most disadvantageous during_________________?

A. Its pulverisation (as it requires more power)
B. Combustion of fire slacks on the grates
C. Handling (e.g. when emptying wagons)
D. None of these

The fuel ratio of a coal is__________________?

A. The ratio of its percentage of fixed carbon to that of volatile matter
B. Helpful in estimation of its rank
C. Both A. and B.
D. Neither A. nor B.

Lurgi coal gasifier is a pressurised ______________ bed reactor?

A. Moving
B. Fixed
C. Fluidised
D. Entrained

A travelling grate stoker is meant for the efficient burning of ______________ coal?

A. Caking
B. Pulverised
C. Non-caking
D. High ash

Largest constituent of blast furnace gas is__________________?

A. N2
B. CO
C. CO2
D. H2

The bright glow of a combustion process is the characteristic of ______________ temperature oxidation of coal?

A. Fast & high
B. Slow & low
C. Slow & high
D. Fast & slow