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) NO
(b) SO2
(c) Hydrocarbon
(d) O3
The correct answers to the above question in:
Answer: (b)
Photochemical smog does not involve SO2 .
Discuss Form
Read more environmental chemistry Based General Science Questions and Answers
Question : 1
Identify the wrong statement in the following.
a) Greenhouse effect is responsible for global warming.
b) Ozone layer does not permit infrared radiation from the sun to reach the earth.
c) Chlorofluorocarbons are responsible for ozone layer depletion.
d) Acid rain is mostly because of oxides of nitrogen and sulphur.
Answer »Answer: (b)
The ozone layer acts as a shield and does not allow ultraviolet radiation from the sun to reach earth. It does not prevent infra-red radiation from the sun to reach earth.
Thus option (b) is the wrong statement and so it is the correct answer.
Question : 2
BOD is connected with
a) organic matter
b) microbes and organic matter
c) microbes
d) None
Answer »Answer: (b)
BOD is connected with microbes and organic matter
Question : 3
CO2 absorbs some of the ............. that radiates from the surface of Earth to space –
a) ultraviolet light
b) heat
c) ozone
d) smog
Answer »Answer: (b)
Question : 4
The pollutants which came directly in the air from sources are called primary pollutants. Primary pollutants are sometimes converted into secondary pollutants. Which of the following belongs to secondary air pollutants?
a) Hydrocarbon
b) Peroxyacetyl nitrate
c) CO
d) NO
Answer »Answer: (b)
Question : 5
When rain is accompanied by a thunderstorm, the collected rain water will have a pH value
a) slightly higher than that when the thunderstorm is not there
b) uninfluenced by occurrence of thunderstorm
c) slightly lower than that of rain water without thunderstorm
d) which depends upon the amount of dust in air
Answer »Answer: (c)
Normal rainwater has a pH of 5.6
Thunderstorm results in the formation of NO and HNO3 which lowers the pH.
Question : 6
The greatest affinity for haemoglobin is shown by which of the following :
a) CO
b) O2
c) NO
d) CO2
Answer »Answer: (c)
Haemoglobin has great affinity for NO.
Verbal Reasoning
Question & Answer Quiz
Non Verbal Reasoning
Question & Answer Quiz
Quantitative Aptitude
Question & Answer Quiz
Computer MCQ
Question & Answer Quiz
General English
Question & Answer Quiz
History GK
Question & Answer Quiz
Polity GK
Question & Answer Quiz
Geography GK
Question & Answer Quiz
Economy GK
Question & Answer Quiz
General Awareness GK
Question & Answer Quiz
Recently Added Subject & Categories For All Competitive Exams
New 100+ Compound Interest MCQ with Answers PDF for IBPS
Compound Interest verbal ability questions and answers solutions with PDF for IBPS RRB PO. Aptitude Objective MCQ Practice Exercises all competitive exams
Continue Reading »
100+ Mixture and Alligation MCQ Questions PDF for IBPS
Most importantly Mixture and Alligation multiple choice questions and answers with PDF for IBPS RRB PO. Aptitude MCQ Practice Exercises all Bank Exams
Continue Reading »
IBPS Profit and Loss Questions Solved Problems with PDF
Most important Profit and Loss multiple choice questions and answers with PDF for IBPS RRB PO. 100+ Aptitude MCQ Practice Exercises all competitive exams
Continue Reading »
100+ Average Aptitude Questions Answers solutions MCQ PDF
New Average multiple choice questions and answers with PDF for IBPS RRB PO. 100+ Quantitative Aptitude MCQ Practice Exercises all competitive exams
Continue Reading »