Which of the following industries discharge mercury as a pollutant ?

Related Mcqs:

Which of the following is a manmade source of air pollution ?

A. Automobile exhaust B. Forest fire C. Bacterial action in soil and swamp areas D. All A., B. and C....

Iron & manganese present as pollutant in water cannot be removed by__________________?

A. Ion exchange process B. Oxidation followed by settling & filtration C. Lime soda process or manganese zeolite process D. Chlorination...

Peroxyacetyl nitrate (PAN), a pollutant is found in the_________________?

A. Automobile exhaust B. Flue gas of coal based power plant C. Exhaust of nitric acid plant D. Exhaust of sulphuric acid plant...

Fresh domestic sewage is _______________ in color?

A. Grey B. Dark brown C. Red D. Black...

In sewage treatment, the detention period allowed for oxidation ponds ranges from _____________ weeks?

A. 1 to 2 B. 4 to 5 C. 9 to 10 D. 15 to 20...