551TNPSC2019Environment & EcologyEnglish
Colourless gas coming out from motor vehicle and cigarette due to incomplete combustion is
Show answerAnswer & explanation
Correct option: C — Carbon monoxide
Free · past papers · answers included
Environment & Ecology MCQ practice free online · page 56
Questions from RRB, NTPC, Group D and JE past papers. Tap an option to check it instantly — every question shows the correct answer, and most carry the explanation the paper gave.
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- 552UKPSC2002Environment & EcologyEnglish
Pollutant emission gas in vehicle exhaust is mainly
Show answerAnswer & explanation
Correct option: B — Carbon monoxide
- 553Arunachal PSC2017Environment & EcologyEnglish
Combustion of petrol in automobiles pollutes the air by producing following metal.
Show answerAnswer & explanation
Correct option: C — Lead
- 554UPPSC2013Environment & EcologyEnglish
Which one of the following air pollutants can affect blood stream leading to death?
Show answerAnswer & explanation
Correct option: D — Carbon monoxide
- 555UPPSC2016Environment & EcologyEnglish
Which of the following air pollutants get dissolved in haemoglobin of the blood more rapidly than oxygen?
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Correct option: C — Carbon monoxide
- 556UPPSC2014Environment & EcologyEnglish
Which of the following air pollutants is most dangerous?
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Correct option: D — Carbon monoxide
- 557UPPSC2012Environment & EcologyEnglish
The non-biotic pollutant underground water is
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Correct option: C — Arsenic
- 558Kerala PSC2019Environment & EcologyEnglish
Indiscriminate use of fertilizers have led to
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Correct option: D — All of the above
- 559MPSC2019Environment & EcologyEnglish
The highest chemical pollution is caused by the industrial effluents of
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Correct option: A — Leather industry
- 560UPPSC2010Environment & EcologyEnglish
Acid rain is caused by pollution of environment by
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Correct option: C — Nitrous oxide and sulphur dioxide
Environment & Ecology practice — common questions
Page 56 of this set has 10 questions on it.
Are these Environment & Ecology questions free to practise?
Yes. Every question on this page is free and needs no account. Create a free account only if you want your progress saved.
Where do these Environment & Ecology MCQs come from?
They are taken from official past papers of Indian government recruitment exams such as RRB NTPC, RRB Group D and RRB JE, and each question keeps a reference to the exam it appeared in.
Are the questions available in Hindi?
Yes. Many papers are set in both languages, so a large share of these questions are available in Hindi. Use the language filter at the top of the page.
Do the questions show answers and explanations?
Every question shows the correct option. Where the source paper included a worked solution, the explanation is shown under "Show answer".