Main pollutant present in automobile exhaust is_________________?

Related Mcqs:

For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than ______________ ppm?

A. 10000 B. 5 C. 500 D. 1000...

Removal of ______________ results from the disinfection of water?

A. Turbidity B. Odour C. Hardness D. Bacteria...

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...

World environment day is observed every year on the 5th of___________________?

A. June B. December C. July D. September...

The pH value of oxidised sewage is about_____________________?

A. 1.8 B. 6.2 C. 7.3 D. 13.4...