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Environment & Ecology MCQ practice free online · page 62

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611UPSC2011Environment & EcologyEnglish
Consider the following. 1. Carbon dioxide 2. Oxides of nitrogen 3. Oxides of sulphur Which of the given above is/are the emission/emissions from coal combustion at thermal power plants?
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Correct option: D — 1, 2 and 3
612UPSC2015Environment & EcologyEnglish
Concerning ‘fly ash’ produced by the power plants using coal as fuel, which of the following statements is/are correct? 1. Fly ash can be used in the production of bricks for building construction. 2. Fly ash can be used as a replacement for some of the Portland cement concrete. 3. Fly ash is made up of silicon dioxide and calcium oxide only, and does not contain any toxic elements. Select the correct answer using the code given below.
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Correct option: A — 1 and 2
613UPPSC2009Environment & EcologyEnglish
Which of the following statements about Radioactive pollution are correct? 1. It causes a hereditary change in the animals. 2. It causes disbalance among different minerals in the soil. 3. It hinders blood circulation. 4. It causes carcinogenesis. Select the correct answer from the code given below.
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Correct option: C — 1, 3 and 4
614APPSC2017Environment & EcologyEnglish
Concerning bio-toilets used by the Indian Railways, consider the following statements. 1. The decomposition of human waste in their toilets is initiated of by fungal inoculum. 2. Ammonia and water vapour are the only end products in this decomposition which are released into the atmosphere. Which of the statements given above is/are correct?
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Correct option: D — Neither 1 nor 2
615UPSC2013Environment & EcologyEnglish
Which of the following can be found as pollutants in the drinking water in some parts of India? 1. Arsenic 2. Sorbitol 3. Fluoride 4. Formaldehyde 5. Uranium Select the correct answer using the code given below.
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Correct option: C — 1, 3 and 5
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616UPSC2012Environment & EcologyEnglish
The acidification of oceans is increasing. Why is this phenomenon a cause of concern? 1. The growth and survival of calcareous phytoplankton will be adversely affected. 2. The growth and survival of coral reefs will be adversely affected. 3. The survival of some animals that have phytoplankton larvae will be adversely affected. 4. The cloud seeding and formation of clouds will be adversely affected. Which of the statement(s) given above is/are correct?
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Correct option: A — 1, 2 and 3
617UPSC2016Environment & EcologyEnglish
In the cities of our country, which among the following atmospheric gases are normally considered in calculating the value of Air Quality Index? 1. Carbon dioxide 2. Carbon monoxide 3. Nitrogen dioxide 4. Sulphur dioxide 5. Methane Select the correct answer using the code given below.
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Correct option: B — Only 2, 3 and 4
618UPSC2012Environment & EcologyEnglish
Lead, ingested or inhaled, is a health hazard. After the addition of lead to petrol has been banned, what still are the sources of lead poisoning? 1. Smelting units 2. Pens and pencils 3. Paints 4. Hair oils and cosmetics Select the correct answer using the code given below.
Show answerAnswer & explanation
Correct option: B — 1 and 3
619UPPSC2010Environment & EcologyEnglish
Consider the following statements. Assertion (A): Soil pollution is more dangerous as compared to industrial pollution. Reason (R): Fertilizer and pesticide enter into food cycle. Choose the correct answer from the code given below.
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Correct option: A — Both (A) and (R) are true and (R) is the correct explanation of (A)
620UPSC2014Environment & EcologyEnglish
Brominated flame retardants are used in many household products like mattresses and upholstery. Why is there some concern about their use? 1. They are highly resistant to degradation in the environment. 2. They can accumulate in humans and animals. Select the correct answer using the code given below.
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Correct option: C — Both 1 and 2

Environment & Ecology practice — common questions

Page 62 of this set has 10 questions on it.

Are these Environment & Ecology questions free to practise?

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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?

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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".

Environment & Ecology MCQ practice free online · page 62

Consider the following. 1. Carbon dioxide 2. Oxides of nitrogen 3. Oxides of sulphur Which of the given above is/are the emission/emissions from coal combustion at thermal power plants?

Which of the following can be found as pollutants in the drinking water in some parts of India? 1. Arsenic 2. Sorbitol 3. Fluoride 4. Formaldehyde 5. Uranium Select the correct answer using the code given below.

In the cities of our country, which among the following atmospheric gases are normally considered in calculating the value of Air Quality Index? 1. Carbon dioxide 2. Carbon monoxide 3. Nitrogen dioxide 4. Sulphur dioxide 5. Methane Select the correct answer using the code given below.

Lead, ingested or inhaled, is a health hazard. After the addition of lead to petrol has been banned, what still are the sources of lead poisoning? 1. Smelting units 2. Pens and pencils 3. Paints 4. Hair oils and cosmetics Select the correct answer using the code given below.

Consider the following statements. Assertion (A): Soil pollution is more dangerous as compared to industrial pollution. Reason (R): Fertilizer and pesticide enter into food cycle. Choose the correct answer from the code given below.

Environment & Ecology practice — common questions