Q. Which of these is the outer most coating in the burning of a coke particle?

View solution

Q. Which law deals with the rate of diffusion of Oxygen per unit surface area of the particle?

View solution

Q. If d is the diffusion coefficient and t is the boundary layer thickness. Then the mass transfer coefficient k is given by?

View solution

Q. Gobar gas is produced by the __________ of ‘gobar’ (cow dung).

View solution

Q. Coking time in beehive coke oven is about __________

View solution

Q. The maximum adiabatic flame temperature is attained when the fuel is burnt with __________

View solution

Q. Height of coke oven is limited (say maximum up to 7 metres) mainly by the __________

View solution

Q. Which of the following has the highest calorific value?

View solution

Q. Higher fuel combustion efficiency cannot be achieved by __________

View solution

Q. Particular coal is said to be free burning when it __________

View solution

Q. The cooling medium used in dry quenching of coke is __________

View solution

Q. High amount of sulphur and phosphorous in coke causes __________

View solution

Q. Cannel coal and boghead coal are the examples of __________

View solution

Q. The difference between total carbon and fixed carbon of coal will be minimum in case of __________

View solution

Q. Out of the following fuels, the difference between the net and gross calorific value is maximum in case of __________

View solution

Q. Which of the following is the maximum coal producing state in India?

View solution

Q. A good quality coal should have __________

View solution

Q. __________ prohibits the use of alcohols directly in petrol engines.

View solution

Q. The hottest part of the flame lies in its ___________ zone.

View solution

Q. Percentage of methane in coke oven gas may be around __________

View solution