Ringelmann chart No. 2 corresponds to _______________ percent black sm – McqOptions

MCQOPTIONS

1.	Ringelmann chart No. 2 corresponds to _______________ percent black smoke?
A.	10
B.	20
C.	40
D.	80
Answer» D. 80

Discussion

No Comment Found

Related MCQs

White smoke coming out of the chimney of a furnace indicates the use of_________________?
Workers working in _______________ industry are most prone to white lung cancer?
World environment day is observed every year on the 5th of___________________?
World’s worst radioactive pollution was caused by nuclear reactor disaster which occured in ___________________?
Which of the following radioactive wastes emits all α, β & γ rays and hence is the most hazardous of all radioactive emitters ?
Which of the following is an adsorbent used for the removal of SO2 from gas/air ?
Which of the following is an adsorbent for removal of nitrogen oxides from gas/air ?
Which of the following gases is having the widest explosion limit (about 2 to 81% gas in gasair mixture), rendering it the property of the most explosive gas ?
Which of the following air pollutants is not toxic to vegetation i.e., doesn’t cause vegetation damage ?
Which is the most efficient dust removal equipment for removal of submicronic dust particles from blast furnace gas ?