A) saltpetre
B) rock phosphate
C) coking coal
D) All of these
Correct Answer: C
Solution :
Exp. [c] The coal found in India is mainly of non-coking quality, and hence coking coal has to be imported. 70% of the steel produced today uses coal. Metallurgical coal (or coking coal) is a vital ingredient in the steel making process. Coking coal is converted to coke by driving off impurities to leave almost pure carbon. During the iron-making process, a blast furnace is fed with the iron ore, coke and small quantities of fluxes (minerals, such as limestone, which are used to collect impurities).You need to login to perform this action.
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