Top 350+ Solved Environmental Engineering MCQ Questions Answer
Q. Which of the following industry is least polluting?
a. Rolling mills
b. Oil refinery
c. Cement industry
d. Thermal power plants
e. Electronic industry
Q. The pH value of sea water is usually
a. Between 3 and 5
b. 1
c. Between 8 and 8.3
d. Between 13.7 and 14
e. Between 5 and 7
Q. The pH value of concentrated sulphuric acid could be expected between
a. 6 and 5
b. 7 and 6
c. 1 and 0
d. 4 and 3
e. 3 and 1
Q. Ultra-violet rays are used for the treatment of water known as
a. Dechlorination
b. Aeration
c. Disinfection
d. Filtration
e. Bleaching
Q. The process of kolling at the pathogenic bacteria of water-borne diseases to make it safe for hospital use, is known as
a. Zeoliting
b. Debacterialisation
c. Chlorination
d. Aeration
e. Sterilization
Q. In one litre sample of drinking water the coliform organism should not exceed
a. 1
b. 100
c. 10
d. 1000
e. 500
Q. Turbidity in water may be removed by
a. Aeration
b. Sedimentation
c. Oxidation
d. Filtration
e. Agitation
Q. Which one of the following is not directly related to the phenomenon of evaporation?
a. None of these
b. Temperature of liquid
c. Surface winds over the liquid
d. Volume of the liquid
e. Surface area of the liquid
Q. The process of passing the water through a thick layer of filtering media is known as
a. Sedimentation
b. Disinfection
c. Putrification
d. Filtration
e. Purification
Q. In case of public supplies, the maximum permissible nitrite content is
a. 250 ppm
b. 100 ppm
c. 50 ppm
d. 200 ppm
e. zero ppm
Q. The presence of which of the following material in water is not considered to be dangerous?
a. Copper
b. Zinc
c. Mercury
d. Calcium
e. Lead
Q. The desirable temperature of portable water is
a. 10?C
b. 37?C
c. 27?C
d. zero degree centigrade
e. 20?C
Q. The expression of the Chezy’s formulais given by
a. v = c/rs
b. v = crs2
c. v = c (rs)1/2
d. v = c/ (rs)1/2
Q. Which of the following is the expression of the Manning’s formula?
a. v = r1/3 s1/2/ n
b. b) v = r2/3 s2/ n
c. c) v = r2/3 s1/2/ n
d. d) v = r2/3 s1/2