Which is the most practical and economical method for removal of suspended solid matter from polluted water ?

Related Mcqs:

The average thickness of ozone layer in stratosphere is about _______________ dobson unit (DU)?

A. 20 B. 230 C. 750 D. 1500...

Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about ______________ ppm (parts per million)?

A. 0.002 B. 0.2 C. 1.2 D. 4.8...

Which of the following is the common pollutant emitted from metallurgical smelters, thermal power plant and cement plants ?

A. NOx B. Hg C. SO2 D. F...

A man exposed to excessive noise level in the working environment may suffer from____________________?

A. Hearing loss B. Rupture of ear drum C. Nervousness & fatigue D. All A., B. & C....

Pick out the wrong statement?

A. Catalytic converter is fitted in automobiles to reduce carbon monoxide concentration in exhaust emissions B. Inhalation of pollutant carbon monoxide results in death by asphyxiation C. Sulphur dioxide is the main pollutant emitted from the exhaust of petrol driven automobiles D. Decomposition of plants containing chlorophyll is a natural source of carbon monoxide in … Pick out the wrong statement?Read More...