21. Gray-King Assay and Roga Index of coal is a measure of its
22. Which of the following is a rich fuel gas?
23. Turndown ratio of a gas burner is equal to the
24. __________ process is meant for direct hydrogenation of coal to produce liquid fuel.
25. Advantages of fluidised bed combustion are
26. In general, the limit of inflammability/explosion limit of fuel gases is widened by the
27. Temperature of coke oven gas just before entering into saturator (for recovery of NH3) is about __________ °C.
28. Shatter index of the coke is a measure of its
29. 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.
30. 'Fat' coal means a coal having
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