The temperature at which plastic layer formation takes place during carbonisation of coal varies from ______________ °C ?

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...

Incomplete combustion of a fuel is characterised by the high _______________ in the flue gas?

A. Smoke B. Temperature C. Oxygen D. Carbon monoxide...

Low temperature oxidation of stored coal results in the________________?

A. Decrease in its caking power & calorific value B. Decrease in its carbon & hydrogen content C. Increase in its oxygen content D. All A., B. and A....

Softening temperature of coal ash is a measure of the _____________ of coal?

A. Caking tendency B. Coking tendency C. Clinkering tendency D. Size stability...

Natural draft created by the chimney depends upon _____________________?

A. Temperature of the flue gas B. Its height C. Both A. & B. D. Neither A. nor B....