Presence of soluble organics in polluted water causes_________________?

Related Mcqs:

Pick out the wrong statement ?

A. The concentric layer in atmosphere which contains about 70% of the total mass of atmosphere and characterised by a steady decrease in temperature is called stratosphere B. Stratosphere is rich in ozone and is located just above the troposphere C. Troposphere is a turbulent dusty zone containing much of water vapor and clouds D. … Pick out the wrong statement ?Read More...

The function of skimming tank in sewage treatment is to remove _____________ substances?

A. Dissolved solid B. Suspended solid C. Oil & fatty D. Gritty & inorganic...

Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal ?

A. By chemical coagulation B. In sedimentation tanks equipped with mechanical scrapper C. In vacuum filter D. In clarifiers...

TLV of ozone (O3) and phosgene (COCl2) in air is _______________ ppm?

A. 0.1 B. 25 C. 100 D. 1000...

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...