There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant ?

Related Mcqs:

The term Biological Oxygen Demand (BOD) is used in relation to ______________________?

A. Potable water B. Cooling water C. Distilled water D. Industrial effluents...

In large thermal power stations very fine particulates present in flue gas are removed by___________________?

A. Wet scrubber B. Bag filter C. Electrostatic precipitators D. Dust catcher...

World’s worst radioactive pollution was caused by nuclear reactor disaster which occured in ___________________?

A. Arizona (U.S.A.) B. Chernobyl (undivided U.S.S.R.) C. Pennsylvania (U.S.A.) D. Moscow (U.S.S.R.)...

The progressive warming up of the earth’s surface is mainly due to the___________________?

A. Automobile exhaust B. Blanketing effect of CO2 in the atmosphere C. De-forestation D. Thickening of ozone layer...

Carbon monoxide is a pollutant, which causes_________________?

A. Respiratory disease (e.g. asthma) B. Asphyxiation (suffocation) leading to death C. Retardation in crop growth D. Damage to building materials like marble...