free Online GK Questions on pollution

free Online GK Questions on pollution
Free Online General Knowledge Quiz
Questions with Answers for Competitive Exams
1. Pollutant from motorcar exhaust that causes mental diseases is
(a) lead
(b) NO2
(c) SO2
(d) Hg
Ans. (a)

2. Lichens are important in the studies on atmospheric pollution because they
(a) can also grow in greatly polluted atmosphere
(b) can readily multiply in polluted atmosphere
(c) are very sensitive to pollutants like SO2
(d) efficiently purify the atmosphere
Ans. (c)

3. Measurement of 1ate of oxygen utilisation by a unit volume of water over a period of time is to measure
(a) biochemical oxygen demand
(b) biosynthetic pathway
(c) biogas generation
(d) fermentation
Ans. (a)

4. The two great industrial tragedies namely, MIC and Chernobyl tragedies respectively occurred where and at which time?
(a) Bhopal 1984, Ukraine 1990
(b) Bhopal 1984, Ukraine 1988
(c) Bhopal 1984, Ukraine 1986
(d) Bhopal 1986, Russia 1988
Ans. (c)

5. Chlorofluorocarbon releases a chemical harmful to ozone
(a) fluorine
(b) sulphur dioxide
(c) nitrogen peroxide
(d) chlorine
Ans. (d)

6. Noise pollution is measured in
(a) hertz
(b) fathoms
(c) nanometers
(d) decibels
Ans. (d)

7. Major source of methane in India is
(a) rice fields
(b) sugarcane plantation
(c) wheat fields
(d) fruit orchards
Ans. (a)

8. Which pigment protects plants from UV damage?
(a) Chlorophyll
(b) Xanthophyll
(c) Phycocyanin
(d) Carotenoids
Ans. (d)

9. Which is not dangerous for life?
(a) Nuclear blast
(b) Deforestation
(c) Biopollutants
(d) Ozone layer
Ans. (d)

10. Pollution indicator plants
(a) are resistant to pollution
(b) can purify the atmosphere
(c) are very sensitive to pollution
(d) are very sensitive to pollutants
Ans. (c)

11. A sewage treatment process in which a portion of the decomposer bacteria present in the waste recycled into the beginning of the process is called
(a) activated sludge treatment
(b) primary treatment
(c) tertiary treatment
(d) cyclic treatment
Ans. (a)

12. Warm ocean surge of Peru current recurring every 5-8 years or so in the East Pacific of South America is widely known as
(a) Gulf stream
(b) Aye Aye
(c) El Nino
(d) Mangox
Ans. (c)

13. Acid rain is caused due to increase in concentration of
(a) SO2 and NO2
(b) CO and CO2
(c) CO and SO3
(d) ozone and dust
Ans. (a)

14. Smog is a combination of
(a) fire and water
(b) smoke and fog
(c) water and smoke
(d) air and water
Ans. (b)

15. Maximum threat to the world is from
(a) global warming
(b) ozone hole
(c) water pollution
(d) soil erosion
Ans. (b)

16. BOD of a pond is related to in per unit volume of water.
(a) all the plants
(b) all the nektons
(c) all the microbes
(d) all the animals
Ans. (c)

17. If fertilisers are added to fresh water
(a) plants will die
(b) overall animal population will increase
(c) eutrophication will occur
(d) fish population will decrease
Ans. (c)

18. The effect of pollution is first and most marked on
(a) natural flora of a place
(b) natural balance of our environment
(c) natural geochemical cycles
(d) all the above three
Ans. (a)

19. Minamata disease is a pollution-related disease, which results from
(a) release of human organic waste into drinking water
(b) accumulation of arsenic into atmosphere
(c) release of industrial waste mercury into fishing water
(d) oil spills into sea
Ans. (c)


20. World environment day is
(a) 5th June
(b) 28th February
(c) 5th August
(d) 28th April
Ans. (a)