Preheating of coal charge for the coke ovens reduces the __________________?

Related Mcqs:

In flue gas analysis by Orsat’s apparatus, carbon monoxide is absorbed by__________________?

A. Cuprous chloride B. Potassium hydroxide C. Alkaline pyrogallol solution D. None of these...

‘Fat coals’ are those coals which have very high____________________?

A. Caking capacity B. Volatile matter content C. Fusion point of its ash D. Inherent moisture content...

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 remainder going to CO, the Orsat analysis in volume percent is_________________?

A. CO2 : 6.26, CO : 1.56, O2 : 3.91, H2O :15.66, N2 : 72.60 B. CO2 : 7.42, CO : 1.86, O2 : 4.64, N2:86.02 C. CO2 : 6.39, CO : 1.60, O2 : 3.99, H2O:25.96, N2:72.06 D. CO2 : 7.60, CO : 1.90, O2 : 4.75, N2 : 85.74...

In high temperature carbonisation (as compared to low temperature carbonisation) of coal___________________?

A. Coke oven gas yield is more B. Tar yield is less but free carbon in tar is more C. Calorific value of coke oven gas is less D. All A., B. and C....

A good coking coal should have high ______________ content?

A. Ash B. Sulphur & phosphorus C. Moisture D. None of these...