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) Muriate of Potash
(b) Nitrolim
(c) Super phosphate
(d) Humus
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
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 : 2
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 : 3
Which of the following best describes “jet streams”?
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.
Answer »Answer: (a)
Question : 4
The smog is essentially caused by the presence of
a) O2 and N2
b) O2 and O3
c) Oxides of sulphur and nitrogen
d) O3 and N2
Answer »Answer: (c)
Smog is caused by oxides of sulphur and nitrogen.
Question : 5
Consider the following chemicals:
- Benzene
- Carbon tetrachloride
- Sodium carbonate
- Trichloroethylene
a) 1, 2 and 4 only
b) 2 only
c) 1 only
d) 1, 2, 3 and 4
Answer »Answer: (a)
Question : 6
Which one of the following acids is used for etching glass?
a) HF
b) HNO3
c) H2SO4
d) HCl
Answer »Answer: (a)
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