Chemical Environmental Engineering

Water filtration rate in a rapid sand filter ranges from ______________ kilolitres/m2/hr?

Byadmin March 11, 2019August 29, 2021

Water filtration rate in a rapid sand filter ranges from ______________ kilolitres/m2/hr?

A. 0.1 to 1
B. 3 to 6
C. 10 to 15
D. 15 to 20

Chemical Environmental Engineering

TLV of mercury in potable (drinking) water is about ______________ ppm?

TLV of mercury in potable (drinking) water is about ______________ ppm?

A. 0.001
B. 0.1
C. 1
D. 5

Read More TLV of mercury in potable (drinking) water is about ______________ ppm?
Chemical Environmental Engineering

Fresh domestic sewage is _______________ in color?

Fresh domestic sewage is _______________ in color?

A. Grey
B. Dark brown
C. Red
D. Black

Read More Fresh domestic sewage is _______________ in color?
Chemical Environmental Engineering

The effect of increase in carbon dioxide level of the atmosphere and its profound effect on our climate is called the ________________?

The effect of increase in carbon dioxide level of the atmosphere and its profound effect on our climate is called the ________________?

A. Catalytic conversion
B. Green house effect
C. Global warming
D. Both B. and C.

Read More The effect of increase in carbon dioxide level of the atmosphere and its profound effect on our climate is called the ________________?
Chemical Environmental Engineering

Exposure to chemicals having carcinogenic properties cause ____________________?

Exposure to chemicals having carcinogenic properties cause ____________________?

A. Dermatitis (skin disorder)
B. Cancer
C. Asphyxiation (suffocation)
D. Asthma

Read More Exposure to chemicals having carcinogenic properties cause ____________________?
Chemical Environmental Engineering

Presence of nitrates in water in excess of 50 ppm causes________________?

Presence of nitrates in water in excess of 50 ppm causes________________?

A. Methemoglobinemia
B. Gastroenteritis
C. Asphyxiation
D. Tooth decay

Read More Presence of nitrates in water in excess of 50 ppm causes________________?
Chemical Environmental Engineering

Which is the best and the most effective method for the removal of organic contaminant present in the polluted water in very small quantity (say < 200 mg/litre) ?

Which is the best and the most effective method for the removal of organic contaminant present in the polluted water in very small quantity (say < 200 mg/litre) ?

A. Lagooning
B. Activated carbon adsorption
C. Biological oxidation pond
D. Chemical coagulation

Read More Which is the best and the most effective method for the removal of organic contaminant present in the polluted water in very small quantity (say < 200 mg/litre) ?