Top 350+ Solved Environmental Engineering MCQ Questions Answer
Q. Which system of collection of sewageis a dry system?
a. conservancysystem
b. biologicaldigestion
c. incernation
d. water carriagesystem
Q. Water with least contamination can be be obtained from
a. Rivers
b. Lakes
c. Wells
d. Reservoirs
e. Spring along the hill slope
Q. Which of the following chemical is least poisonous?
a. Arsenic
b. Lead
c. Sodium
d. Cyanide
e. Mercury
Q. Disinfection of drinking water means removal of
a. Turbidity
b. Colour
c. Odour
d. Oxygen
e. Bacteria
Q. Scintillation counter can detect
a. beta rays
b. X-rays
c. gamma rays
d. All of the above
e. None of the above
Q. Lead is a cumulative poison which ends up in
a. eyes
b. eyes and ears
c. bones and tissues
d. legs and hands
e. None of the above
Q. Which of the following area of work needs lowest noise level?
a. Gymnasiums
b. Lecture halls
c. Library
d. Kitchens
e. None of the above
Q. The hardness limit for portable water ranges between
a. 10 - 50 ppm
b. 50 - 65 ppm
c. 75 - 117 ppm
d. 150 - 250 ppm
e. 300 - 700 ppm
Q. The process used for the removal of dissolved carbondioxide from the water, is known as
a. Coagulation
b. Agitation
c. Aeration
d. Sedimentation
e. Zeolitc
Q. Which of the following automobile will provide least pollution problems
a. Diesel engine powered
b. Petrol engine powered
c. Gas turbine powered
d. Wankel engine powered
e. Battery powered
Q. Out of the following diesel engines, the minimum air consumption per BHP will be in
a. 4 stroke mechanical injection
b. 4 stroke air injection
c. 2 stroke mechanical injection pump scavenging
d. 2 stroke air injection
e. None of the above
Q. The bad smell due to decomposition of sewage, on account of the action of bacteria, is mainly due to the presence of
a. Dead bacteria
b. Oxygen
c. Carbondioxide
d. Hydrogen sulphide
e. None of the above
Q. The permissible level of HCN in drinking water is
a. Less than 0.01 mg/litre
b. Around 1 mg/litre
c. Around 5 mg/litre
d. Between 10 to 20 mg/litre
e. More than 50 mg/litre
Q. The chloride content in the water for public supplies should not exceed
a. 250 mg/litre
b. 100 mg/litre
c. 50 mg/litre
d. 20 mg/litre
e. 1 mg/litre