Combustion reaction of fuels is a/an __________ reaction. None of these Auto catalytic Endothermic Exothermic TRUE ANSWER : ? YOUR ANSWER : ?
For maximum discharge through a chimney, its height should be More than 105.7 metres 200 meters Equal to the height of the hot gas column producing draught Infinitely long TRUE ANSWER : ? YOUR ANSWER : ?
Fossil fuels mean Solid fuels Premature fuels with low calorific value Liquid fuels Those fuels which are found in the crust of earth TRUE ANSWER : ? YOUR ANSWER : ?
Net calorific value is the gross calorific value less the __________ heat of water in the product of combustion when cooled to 15°C. Sensible and latent None of these Latent Sensible TRUE ANSWER : ? YOUR ANSWER : ?
One kg of carbon for theoretically complete combustion requires __________ kg of air. 0.5 23 12 11.5 TRUE ANSWER : ? YOUR ANSWER : ?
Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about __________ °C. 1700-1800 400-500 1400-1500 900-1000 TRUE ANSWER : ? YOUR ANSWER : ?
Abrasion index of blast furnace coke should be around __________ percent. 20 55 80 35 TRUE ANSWER : ? YOUR ANSWER : ?
Benzene is used As a perfume As an explosive For making insecticides (e.g., DDT, BHC etc.), detergent & rubber (SBR) As a motor fuel TRUE ANSWER : ? YOUR ANSWER : ?
A travelling grate stoker is meant for the efficient burning of __________ coal. Caking Non-caking Pulverised High ash TRUE ANSWER : ? YOUR ANSWER : ?
Low temperature carbonisation of coal produces Soft coke No by-products Very low calorific value coke oven gas Metallurgical coke TRUE ANSWER : ? YOUR ANSWER : ?