There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant ?
Correct answer: C. Aluminium
- A. Mercury
- B. Arsenic
- C. Aluminium
- D. Lead
Explanation
Mercury, arsenic and lead are well-known toxic heavy-metal pollutants, whereas aluminium is not usually included in the standard list of thirteen metallic pollutants. Aluminium can still become environmentally harmful at excessive concentrations, but it is the intended exception here.
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
In water treatment plant, zeolite process is used to remove the _____________ of water?
Disinfection of water is done to remove ______________________?
The effect of increase in carbon dioxide level of the atmosphere and its profound effect on our climate is called the ________________?
Oxidation of ammonia is________________?
Though liquid ammonia itself is a fertiliser (with 82% nitrogen content) yet it is commonly not used as such in a tropical country like India, because it___________________?
Which of the following fertilisers contains the least percentage of nitrogen ?