Chemical Environmental Engineering

Which of the following is the most widely used disinfectant in water treatment ?

Byadmin March 11, 2019August 29, 2021

Which of the following is the most widely used disinfectant in water treatment ?

A. Chlorine
B. Irradiation of water by ultraviolet light
C. Cation exchanger
D. Coagulation

Chemical Environmental Engineering

In water treatment, alum [Al2(SO4)3] is used for the process of __________________?

In water treatment, alum [Al2(SO4)3] is used for the process of __________________?

A. Filtration
B. Coagulation
C. Sedimentation
D. Disinfection

Read More In water treatment, alum [Al2(SO4)3] is used for the process of __________________?
Chemical Environmental Engineering

Scale formation in boiler is controlled by____________________?

Scale formation in boiler is controlled by____________________?

A. Preheating of feed water
B. Reduction in hardness, silica & alumina in feed water
C. Keeg the pH value of feed water just below 7
D. Eliminating H2S in feed water

Read More Scale formation in boiler is controlled by____________________?
Chemical Environmental Engineering

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

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

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

Read More The function of skimming tank in sewage treatment is to remove _____________ substances?
Chemical Environmental Engineering

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

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

A. Sedimentation
B. Skimming off
C. Chlorination
D. Biological oxidation

Read More Which is the most practical and economical method for removal of suspended solid matter from polluted water ?
Chemical Environmental Engineering

A standard test for determination of hardness in water is termed as ______________ test?

A standard test for determination of hardness in water is termed as ______________ test?

A. EDTA
B. Electometric
C. Total count
D. Presumptive

Read More A standard test for determination of hardness in water is termed as ______________ test?
Chemical Environmental Engineering

Which of the following industries discharge mercury as a pollutant ?

Which of the following industries discharge mercury as a pollutant ?

A. Chloro-alkali industry
B. Tanneries
C. Beverage plant
D. Phosphoric acid plant

Read More Which of the following industries discharge mercury as a pollutant ?

Similar Posts