A coal containing very high percentage of durain is called __________ coal. Bright Non-banded Splint Boghead TRUE ANSWER : ? YOUR ANSWER : ?
Gross calorific value will be equal to the net calorific value for C₂H₆ C₂H₂ H₂ CO TRUE ANSWER : ? YOUR ANSWER : ?
A good metallurgical coke should have very low Fusion point of its ash Sulphur & phosphorous content Hardness & strength Porosity TRUE ANSWER : ? YOUR ANSWER : ?
During coal carbonisation process, the conversion of semi-coke to coke is accompanied by an increase in the __________ of the mass. Porosity None of these Electrical resistivity Density TRUE ANSWER : ? YOUR ANSWER : ?
Volumetric ratio of N₂ to O₂ in dry atmospheric air is 4.76 0.79 0.21 3.76 TRUE ANSWER : ? YOUR ANSWER : ?
A certain thickness of the coal, if stored unscientifically on soft (katcha) ground having no metallic/concrete flooring gets sunked into the ground, which is termed as the 'carpet loss'. The carpet loss may be of the order of __________ cms. 1 to 2 20 to 40 3 to 4 5 to 15 TRUE ANSWER : ? YOUR ANSWER : ?
Micum Index of a coke is a measure of its Reactivity Porosity Bulk density Hardness & strength TRUE ANSWER : ? YOUR ANSWER : ?
Gray King Assay and Swelling Index of a coal is a measure of its Resistance to impact breakage Swelling characteristics Agglutinating properties Abradability TRUE ANSWER : ? YOUR ANSWER : ?
Out of the following, which is the most important parameter for the blast furnace grade coke? Ash content Moisture content Volatile matter content CSR & CRI TRUE ANSWER : ? YOUR ANSWER : ?