Top 350+ Solved Environmental Engineering MCQ Questions Answer
Q. The concentration of biodegradable organic matter after the septic tank is
a. 50ppm
b. 100ppm
c. 200ppm
d. 75ppm
Q. What is the maximum design flow of sewage in a septic tank?
a. 70 liters per person per day
b. 100 liters per person per day
c. 30 liters per person per day
d. 40 liters per person per day
Q. Which of the following is not the method of disposal of sewage from septic tank?
a. upflow anaerobic filter
b. soil absorption system
c. vacuum filter
d. biological filters
Q. The minimum depth of septic tank as per design consideration is
a. a) 1.8m
b. b) 1m
c. c) 1.2m
d. d) 1.5m
Q. Turbidity of water is usually measured in terms of
a. Sodium scale
b. Silica scale
c. Cobalt scale
d. Platinum scale
e. Calcium scale
Q. Which of the following pollutant affects lungs?
a. Silica
b. Benzene
c. Lead
d. Aldrin
e. None of the above
Q. Black holes are celestial bodies which
a. Have strong magentic field
b. Have strong electrical field
c. Do not allow any light to escape outside
d. Are self luminous bodies
e. Green
Q. The emission of carbon monoxide in automobile exhaust will be low when the vehicle is
a. idling
b. accelerating
c. cruising at low speeds
d. cruising at high speeds
e. None of the above
Q. Temporary hardness in water in caused by salts like
a. Sulphates
b. Nitrates
c. Chlorides
d. Carbonates
e. All of the above
Q. The colour of water is measured
a. In ferms of pH value
b. In terms of degree of hardness
c. In terms of platinum cobalt scale
d. ppm of dissolved solids
e. None of the above
Q. Air pollutants common to urban environments are
a. sulphur dioxide
b. particulate matter
c. Hydrocarbons
d. All of the above
e. None of the above
Q. Ionisation chamber can be used for the detection of all of the following EXCEPT
a. beta rays
b. X-rays
c. gamma rays
d. Alpha rays
e. None of the above
Q. Which of the following is used in the recently developed technology for communication?
a. Optical fibre
b. Glass fibre
c. Nylon fibre
d. Quartz fibre
e. None of these
Q. All of the following give Beta and Gamma radiations EXCEPT
a. Iridium 192
b. Iodine 131
c. Cobalt 60
d. Polonium 210
e. None of the above