Permissible safe limit (TLV) of _____________ toxic gas is 100-1000 parts per million (ppm)?
Correct answer: B. Moderately
- A. Highly
- B. Moderately
- C. Extremely
- D. Very extremely
Explanation
A permissible concentration of 100 to 1000 ppm is conventionally classified as a moderately toxic gas range. Highly toxic gases have much lower allowable limits because small concentrations can cause serious harm.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
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.
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
The common pollutant generated in chlor-alkali industry and battery manufacture is ___________________?
Deaeration of high pressure boiler feed water is done to reduce ___________________?
Which of the following radioactive wastes emits all α, β & γ rays and hence is the most hazardous of all radioactive emitters ?
The Killer gas which caused Bhopal gas tragedy in 1984 was________________?
Which of the following industries discharge mercury as a pollutant ?
The detrimental effect on organism and water quality with temperature rise of aquatic system is the reduction of _____________ of water?