Q. In low temperature carbonisation of coal as compared to high temperature carbonisation __________ produced is less.

View solution

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

View solution

Q. The calorific value is the highest out of the following for

View solution

Q. Coke compared to the coal from which it has been made, contains

View solution

Q. A gaseous fuel in order to develop luminousity on burning, must contain

View solution

Q. Nitrogen present in the flue gas is determined in the orsat apparatus by absorbing it in

View solution

Q. The lowest temperature, at which a solid fuel produces enough vapors to support continuous combustion, is called

View solution

Q. A coal having high volatile matter content will

View solution

Q. During coking of coal, the ash content (percentage)

View solution

Q. Furnace oil consumption in a furnace for a given duty employing preheated combination air (at 300° ) may be reduced by about __________ percent as compared to the use of atmospheric combustion air.

View solution

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

View solution

Q. The weathering index of a coal

View solution

Q. Bright coal

View solution

Q. Most of the coking coals are

View solution

Q. Gobar gas constitutes mainly of

View solution

Q. High ash containing coke

View solution

Q. Stoichiometric combustion of 12 kg of carbon requires __________ of oxygen.

View solution

Q. Coal is pulverised before burning in large capacity boiler furnaces mainly to

View solution

Q. Which of the following is a primary fuel ?

View solution

Q. Combustion of pulverised coal compared to the lumpy coal

View solution