Presence of a certain minimum quantity of fluorine is desirable in potable water to prevent___________________?

Related Mcqs:

Which of the following fine dust removal equipments is the most efficient ?

A. Bag filter B. Scrubber C. Electrostatic precipitator D. Cyclone separator...

Which is the most efficient dust removal equipment for removal of submicronic dust particles from blast furnace gas ?

A. Packed scrubber B. Gravity settling chamber C. Electrostatic precipitator D. Hydrocyclone...

Pick out the correct statement?

A. Noise from ball mills can be dealt with by fibre glass lined enclosures B. Noise from vibrating chutes can be reduced by lining the metallic chute with rubber C. Noise of conveyor belt system is reduced by using urethane coated cloth conveyor belts and rubber/plastic covered metallic rollers D. All A., B. & C....

Presence of volatile compounds like gasoline, oil, alcohol, ether etc. in municipal sewers may cause___________________?

A. Explosion B. Non biodegradable foam C. Undesirable plant growth D. Corrosion...

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...