Ringelmann chart No. 2 corresponds to _______________ percent black smoke?
Correct answer: C. 40
- A. 10
- B. 20
- C. 40
- D. 80
Explanation
Ringelmann chart number 2 represents about 40% blackness or opacity. The scale increases approximately from 0% for No. 0 to 100% for No. 5, making No. 2 equal to 40%.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Chemical Process Principles
2,710 free Chemical Process Principles MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Chemical Process Principles questions
Oilish impurities present the effluent discharged from the electroplating industry is normally not removed by _____________________?
______________ content of the phosphate rock is the pollutant of primary interest in a phosphatic fertiliser plant ?
Which of the following is a manmade source of air pollution ?
Global warming may result in __________________?
Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of_________________?
Which of the following is not a practical method of low level radioactive waste disposal ?