Wood charcoal is obtained by the destructive distillation of wood. It is used in the production of activated carbon, which is not used for the

Incomplete combustion of fuel in the furnace is judged by high __________ of the flue gases.

A. CO content

B. Dew point

C. CO₂ content

D. O₂ content

High sulphur content in a fuel __________ of the flue gases.

A. Decreases the dew point

B. Increases the dew point

C. Reduces the combustion efficiency by limiting the permissible temperature reduction

D. Both B & C

Fusion point of coal ash generally varies from 1000 to 1700°C. Ash having fusion point less than __________ °C is liable to form clinker.

A. 1100

B. 1250

C. 1350

D. 1400

Coal tar fuel - 200 (CTF 200) is a mixture of

A. Pitch and creosote oil

B. Light oil and pitch

C. Anthracene and crecosote oil

D. Solar oil and pitch