set 1 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 3 EXERCISES
The following question based on environmental chemistry topic of general science mcq
(a) Narrow meandering bands of winds which blow in mid latitude near the tropopause and encircle the globe.
(b) Wind blowing from sub tropical high pressure belts towards the tropical low pressure belts.
(c) Wind system with seas and reversal of direction.
(d) Winds blowing from the tropical high pressure belts towards the equatorial low pressure belts.
The correct answers to the above question in:
Answer: (a)
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Read more environmental chemistry Based General Science Questions and Answers
Question : 1
The statement which is not correct about control of particulate pollution
a) Gravity settling chamber removes larger particles from the air
b) Cyclone collector removes fine particles in the diameter range 5-20 microns
c) In electrostatic precipitator, the particulates are made to acquire positive charge which are then attracted by the negative electrode and removed
d) Wet scrubbers are used to wash away all types of particulates
Answer »Answer: (c)
Particulates acquire negative charge and are attracted by the positive electrode.
Question : 2
BOD is connected with
a) organic matter
b) microbes
c) microbes and organic matter
d) None of these
Answer »Answer: (c)
BOD is connected with microbes and organic matter.
Question : 3
The substance having the largest concentration in acid rain?
a) HNO3
b) HCl
c) H2CO3
d) H2SO4
Answer »Answer: (d)
Acid rain contains H2 SO4 > HNO3 > HCl.
Question : 4
What is the reason for white cement to be white?
a) It does not contain iron
b) It does not contain silicon
c) It does not contain carbon
d) It does not contain calcium
Answer »Answer: (a)
Question : 5
Which of the following statements about photochemical smog is wrong?
a) It has low concentration of oxidising agent
b) It can be controlled by controlling the release of NO2 , hydrocarbons ozone, etc.
c) It has high concentration of oxidising agents
d) Plantation of some plants like pinus helps in controlling photochemical smog.
Answer »Answer: (a)
Question : 6
Which fertilizer is assimilated directly by the plant?
a) Muriate of Potash
b) Nitrolim
c) Super phosphate
d) Humus
Answer »Answer: (a)
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