The extent of darkness caused due to smoke can be determined by the help of:? Pollution Mcqs February 20, 2019 BILAL KHATTAK0 A.Smoke filters B.Ringelmann’s charts C.Horizontal microscopesD.All of theseundefinedRelated Mcqs:“If you want to smoke,you’ll have to go out”, said the conductor.He said to his son, “Do not smoke.”Which of the following equipment is installed in power plants to reduce air pollution due to smoke?The percentage of air pollution caused due to smoke:?In Iocomotives, swaying couple is caused due toWhen a beam having square cross-section is loaded longitudinally, the shear stress developsWhite smoke indicates:Blue smoke indicates:Black smoke indicates:Extent of damages means: