In water treatment plant, zeolite process is used to remove the _____________ of water?
A. Acidity
B. Alkalinity
C. Hardness
D. Iron & zinc
Chemical Environmental Engineering
On prolonged exposure to high concentration of carbon monoxide (> 5000 ppm), man dies because __________________?
On prolonged exposure to high concentration of carbon monoxide (> 5000 ppm), man dies because __________________?
A. Of clotting of blood
B. Of jamming of respiratory tract
C. It forms carboxyhemoglobin by combining with haemoglobin of blood, thereby making it
incapable of absorbing oxygen
D. It forms CO2 by combining with oxygen present in the blood
There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant ?
There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant ?
A. Mercury
B. Arsenic
C. Aluminium
D. Lead