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Chemical Engineering / Q&A

Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in____________________?

Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in____________________?

A. Coagulation and flocculation of colloids
B. Oxidation of carbonaceous matter to CO2
C. Nitrification or oxidation of ammonia derived from breakdown of nitrogenous organic matter
to the nitrite and eventually to the nitrate
D. All A., B. and C. (Correct)

 

Bacterial aerobic oxidation of polluted water in biological oxidation ponds is done to purify it. Presence of bacteria helps in____________________? Read More »

Chemical Engineering / Q&A, MCQs / Q&A

Addition of ______________ to the steel helps in increasing the residual magnetism in steel used for making magnets?

Addition of ______________ to the steel helps in increasing the residual magnetism in steel used for making magnets?

A. Chromium
B. Nickel
C. Tungsten
D. Cobalt (Correct)

 

Addition of ______________ to the steel helps in increasing the residual magnetism in steel used for making magnets? Read More »

Chemical Engineering / Q&A, MCQs / Q&A