ENVIRONMENTAL POLLUTION & CONTROL MCQS 01

ENVIRONMENTAL POLLUTION & CONTROL  MCQS 01

 

1. Which of the following is used in ceramic industries?
a) Electrostatic precipitator
b) Dynamic precipitator
c) Spray tower
d) Wet cyclonic scrubber
Answer: b

2. Wet scrub4bers are classified into ____ types.
a) 2
b) 3
c) 5
d) 6
Answer: b
3. The centrifugal collectors are classified into how many types?
a) 3
b) 4
c) 5
d) 2
Answer: d
4. Which of the following air pollution control device has maximum efficiency?
a) Electrostatic precipitator
b) Dynamic precipitator
c) Spray tower
d) Wet cyclonic scrubber
Answer: a
5. Which of the following fluid is used in web scrubbers?
a) Lime
b) MgSO4
c) NaCl
d) K2Cr2O7
Answer: a
6. Which of the following is incorrect regarding fabric filter?
a) They can remove very small particle
b) They are liable to chemical attack
c) They have low efficiency in comparison to venturi scrubber
d) They can handle large volume of gas at relatively high speed
Answer: c
7. Which of the following removes both gaseous and particulate contaminants?
a) Venturi scrubber
b) Gravitational settling chamber
c) Dynamic precipitator
d) Wet scrubber
Answer: a
8. Identify the correct statement regarding Electrostatic precipitator.
a) Minimum particle size removal is <0.5μm
b) They can be operated at high temperature
c) It has low maintenance cost
d) It does not cause any freezing problem
Answer: b
9. Pollution by particulate matter emission in the atmosphere does not take place during
metal
(A) Grinding
(B) Machining
(C) Cutting
(D) Polishing
Answer: Option D
10. There are thirteen metals which are treated as pollutants. Which of the following metals is
not a pollutant?
(A) Mercury
(B) Arsenic
(C) Aluminium
(D) Lead
Answer: Option C