Presence of ____________ in water stream are deleterious to aquatic life?

Related Mcqs:

Disinfection of water is done to remove ______________________?

A. Color B. Bad taste C. Foul odour D. Bacteria...

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....

Most efficient and suitable dust removal equipment for removal of fly-ash from flue gas in a thermal power plant is the__________________?

A. Gravity settling chamber B. Cyclone separator C. Electrostatic precipitator D. Bag filter...

Foul odour and bad taste of water is removed by treating with__________________?

A. Alum B. Bleaching powder C. Activated carbon D. Copper sulphate...

Which of the following is an adsorbent used for the removal of SO2 from gas/air ?

A. Bog iron B. Limestone powder or alkalised alumina C. Silica gel D. Active carbon...