Top 350+ Solved Environmental Engineering MCQ Questions Answer
Q. The main disadvantage of hard water is
a. Increased soap consumption
b. Bad taste
c. Foul smell
d. More turbidity
e. Higher density
Q. The maximum permissible level or pesticides, in general, in drinking water is nearly
a. 50 to 100 ppm
b. 1 to 50 ppm
c. 100 to 250 ppm
d. 250 to 500 ppm
e. 500 to 1000 ppm
Q. The emission of oxides of nitrogen in automobile exhaust will be least when the vehicle is
a. Accelerating
b. Idling
c. Cruising at high speed
d. Cruising at low speed
e. Decelerating
Q. Mottling of teeth is associated with the presence of
a. Fluorides in water
b. Calcium in water
c. Chloride in water
d. Sulphur in water
e. Sodium chloride in water
Q. Which of the following is the major source of flyash emission?
a. Sintering plants
b. Sulphuric acid plant
c. Power plants
d. Oil refineries
e. Blast furnace
Q. Theodolite is used by
a. Electronic Engineers
b. Cartrographers
c. None of these
d. Physicists
e. Surveyors
Q. Water with least contamination can be be obtained from
a. Lakes
b. Spring along the hill slope
c. Wells
d. Reservoirs
e. Rivers
Q. Which of the following chemical is least poisonous?
a. Mercury
b. Cyanide
c. Arsenic
d. Lead
e. Sodium
Q. Disinfection of drinking water means removal of
a. Bacteria
b. Colour
c. Odour
d. Turbidity
e. Oxygen
Q. The hardness limit for portable water ranges between
a. 10 - 50 ppm
b. 300 - 700 ppm
c. 75 - 117 ppm
d. 150 - 250 ppm
e. 50 - 65 ppm
Q. The process used for the removal of dissolved carbondioxide from the water, is known as
a. Coagulation
b. Sedimentation
c. Aeration
d. Zeolitc
e. Agitation
Q. Which of the following automobile will provide least pollution problems
a. Battery powered
b. Petrol engine powered
c. Gas turbine powered
d. Diesel engine powered
e. Wankel engine powered
Q. The permissible level of HCN in drinking water is
a. More than 50 mg/litre
b. Around 1 mg/litre
c. Less than 0.01 mg/litre
d. Between 10 to 20 mg/litre
e. Around 5 mg/litre
Q. The chloride content in the water for public supplies should not exceed
a. 1 mg/litre
b. 250 mg/litre
c. 50 mg/litre
d. 20 mg/litre
e. 100 mg/litre
Q. The most frequent method of bacterial reproduction is by
a. The formation of spores
b. Budding
c. Cell division
d. Colony formation
e. Sexual process