MCQ PracticeWhich of the following is not a directly fired furnace?Subject: Chemical EngineeringTopic: Furnace TechnologyABy-product coke ovenBCalcination kilnCSintering furnaceDOpen hearth furnaceCorrect Answer: APractice QuizBack to MCQsRelated MCQsBy what percent is the average export of country T over all the given years moreIf the ratio of export to import in country S and country U is 1 : 2 and 4 : 1 iWhat is the percentage increase in the export of all the countries together duri