Top 350+ Solved Environmental Engineering MCQ Questions Answer
Q. The unit parts per million is identical to
a. Grains per galleon
b. Pounds per cubic foot
c. Milligrams per kg
d. Tonnes peracre foot
e. None of the above
Q. Which fuel will have least air consumption per kg of fuel during consumption?
a. Gasoline
b. Benzol
c. Spirit
d. Lubricating oil
e. None of the above
Q. The desirable temperature inside an air conditioned auditorium is
a. 0?C
b. 5?C
c. 10?C
d. 20?C
e. None of the above
Q. One kg of octane is burnt by four alternative processes given below. In which case the work available will be maximum
a. When burnt in an open pan in atmosphere
b. When burnt in an internal combustion engine
c. When burnt in a fuel cell
d. When burnt in a reversible process
e. None of the above
Q. Which of the following is a cold cathode lamp?
a. Sodium vapour lamp
b. High pressure mercury vapour lamp
c. Low pressure mercury vapour lamp
d. Neon lamp
e. None of the above
Q. Corrosive action of water could be due to its
a. alkalinity
b. hardness
c. dissolved oxygen
d. Any of the above
e. None of the above
Q. The anitdote for the poisonous effects due to mercury, is
a. Vitamin K
b. BAL
c. Thiosulphate
d. Altropine
e. Any of the above
Q. The speed of sound through human body is around
a. 344 m/s
b. 688 m/s
c. 1560 m/s
d. 3120 m/s
e. None of the above
Q. A fuel of octane rating 85 matches the antiknock qualities of a mixture consisting of
a. 85% petrol + 15% diesel
b. 15% petrol + 85% diesel
c. 85% benzene + 15% methyl chloride
d. 85% octane + 15% heptane
e. None of the above
Q. For controlling the growth of algae, the chemical generally used is
a. Alum
b. Lime
c. Bleaching powder
d. Copper sulphate
e. Ozone
Q. Out of the following metals the least permissible percentage in drinking water is
a. Chromium
b. Copper
c. Zinc
d. Lead
e. None of the above
Q. The first aid for a victim of electric shock is
a. bandage
b. sprinkling of water on the face
c. glass of milk and cold water
d. artificial respiration
e. None of the above
Q. Prechlorination
a. Improves coagulation
b. Reduces odours
c. Reduces organisms
d. All of the above
e. None of the above
Q. Which of the following engines uses two fuels simulataneously?
a. Multifuel engine
b. Wankel engines
c. Free piston gas generator
d. Dual fuel engines
e. None of the above
Q. On board ships, the source of drinking water may be
a. Rain water
b. Sea water
c. Desalted sea water
d. Pumped deep sea water
e. Any of the above