Biochemical Engineering Questions and Answers
A set of questions and answers to test and improve your knowledge and understanding of Biochemical Engineering.
A set of questions and answers to test and improve your knowledge and understanding of Biochemical Engineering.
Temporary hardness of water is caused by the presence of
chlorides of calcium and magnesium
sulfates of calcium and magnesium
bicarbonates of calcium and magnesium
carbonates of sodium and potassium
Correct answer is C
No explanation has been provided for this answer.
10% calcium chloride solution
10% magnesium sulfate solution
10% magnesium chloride solution
10% sodium chloride solution
Correct answer is D
No explanation has been provided for this answer.
Permanent hard water may be softened by passing it through
sodium silicate
sodium bicarbonate
sodium hexametaphosphate
sodium phosphate
Correct answer is C
No explanation has been provided for this answer.
have any bad effect in boiler
make cooking of foods difficult
make it unfit for drinking
cause difficulty in the washing of clothes with soaps
Correct answer is C
No explanation has been provided for this answer.
The chemical oxygen demand (COD) measures the
amount of oxygen required for growth of microorganisms in water
amount of oxygen that would be removed from the water in order to oxidize pollution
amount of oxygen required to oxidize the calcium present in waste water
none of the above
Correct answer is B
No explanation has been provided for this answer.