Quiznetik
Environmental Science | Set 2
1. Yellowing of Taj Mahal is an effect of
A. Acid rain
B. Global warming
C. Ozone depletion
D. All of the above
Correct : A. Acid rain
2. Identify the aftermaths of acid rain from the following
A. Dissolving and washing away of nutrients from the soil
B. Increasing the acidity of soils, thereby hindering the growth of plants
C. Damaging the building materials/ heritage sites
D. All of the above
Correct : D. All of the above
3. Increase in concentration of toxic level in each trophic level is referred to as
A. Eutrophication
B. Bio magnification
C. Bioaccumulation
D. Bio concentration
Correct : B. Bio magnification
4. Pollutants that are easily manageable and decomposable in nature are called
A. Biodegradable pollutants
B. Non-biodegradable pollutants
C. Renewable pollutants
D. None of these
Correct : A. Biodegradable pollutants
5. The supersonic jets cause air pollution by the thinning of
A. Carbon dioxide layer
B. Sulphur dioxide layer
C. Ozone layer
D. Oxygen layer
Correct : C. Ozone layer
6. Which of the following is the best indicator of SO2 pollution
A. Bryophytes
B. Pteridophytes
C. Lichens
D. Algae
Correct : C. Lichens
7. BOD stands for
A. Biotic oxidation demand
B. Biological oxygen demand
C. Biological oxidation demand
D. Biochemical oxygen demand
Correct : B. Biological oxygen demand
8. A river with high BOD value means
A. Highly polluted
B. Highly clean
C. Highly productive
D. None of the above
Correct : A. Highly polluted
9. Which gas is responsible for ozone layer depletion around earth?
A. Carbon dioxide
B. Chlorofluorocarbons
C. Oxygen
D. Nitrogen oxide
Correct : B. Chlorofluorocarbons
10. What is Kyoto Protocol?
A. It is an agreement among countries to take steps for reducing global warming.
B. It is an agreement among countries to take steps for reducing acid rain.
C. It is an agreement among countries to take steps for planting trees to control pollution.
D. It is an agreement among countries to start using nuclear energy.
Correct : A. It is an agreement among countries to take steps for reducing global warming.
11. Possible health effects of noise pollution includes
A. Hearing loss
B. Hypertension
C. Cardiovascular effects
D. All of the above
Correct : D. All of the above
12. Noise is measured by sound meter and the unit is
A. Hertz
B. Joule
C. Decibel
D. Seconds
Correct : C. Decibel
13. Which of the following are major causes of land degradation?
A. Soil erosion
B. Water logging
C. Deforestation
D. Desertification
Correct : C. Deforestation
14. The main components of photochemical smog is
A. Water vapors
B. Nitrogen oxides
C. Sulphur oxides
D. All of the above
Correct : D. All of the above
15. Which gas is responsible for the global warming?
A. Nitrogen
B. Carbon dioxide
C. Noble gases
D. Hydrogen
Correct : B. Carbon dioxide
16. Which country has organized its cabinet meeting under the sea to drag attention of the world towards the Global Warming and its threats?
A. Maldives
B. Sri Lanka
C. Fiji
D. Indonesia
Correct : A. Maldives
17. Which of the following effect is responsible for Global Warming?
A. Greenhouse effect
B. Radioactive effect
C. Solar effect
D. Nuclear effect
Correct : A. Greenhouse effect
18. Which of the following greenhouse gas is entirely anthropogenic in origin?
A. CFCs
B. Methane
C. Carbon dioxide
D. Water vapor
Correct : C. Carbon dioxide
19. Which of the following statements regarding the greenhouse effect has the lowest degree of certainty?
A. Addition of greenhouse gases to the atmosphere results in increased heat energy in the atmosphere
B. Global warming will result in an increase in the number of tropical storms
C. Global warming will result in rising sea levels
D. The concentrations of greenhouse gases in the atmosphere are increasing due to human activities.
Correct : B. Global warming will result in an increase in the number of tropical storms
20. Which of the following is not a greenhouse gas?
A. Methane
B. Ozone
C. Water vapor
D. Carbon dioxide
Correct : C. Water vapor
21. The two major impacts expected as a result of rising global temperatures are
A. Higher water levels in lakes and streams but more consistent flooding patterns
B. Regional climatic changes and a rise in sea level
C. Longer summers and drier winters
D. Low water levels in lakes and streams and larger floodplains.
Correct : B. Regional climatic changes and a rise in sea level
22. How are humans making greenhouse gases of our own?
A. Burning fossil fuels
B. Burning forests
C. With large scale agriculture
D. All of these
Correct : A. Burning fossil fuels
23. The solar radiation that bounces off the earth back towards the atmosphere is mostly
A. Gamma radiation
B. X-ray radiation
C. Ultraviolet radiation
D. Infrared radiation
Correct : D. Infrared radiation
24. Things you can do to decrease global warming include
A. Reduce the usage of your air conditioner on high
B. Turn off your light when you are not using them.
C. Use public transports instead of personal vehicles for transportation.
D. All of the above
Correct : D. All of the above
25. Excess atmospheric carbon dioxide increases greenhouse effect as carbon dioxide
A. Precipitates dust in the atmosphere
B. Is opaque to infrared rays
C. Reduces atmospheric pressure
D. Is heavier than other gases
Correct : B. Is opaque to infrared rays
26. Which of the following is not a potential adverse effect of global warming?
A. More extreme weather patterns
B. Retreat of glaciers
C. Sea level rise
D. An increase of UV-B radiation
Correct : D. An increase of UV-B radiation
27. Which of the following processes adds to the removal of carbon dioxide from the atmosphere?
A. Burning fossil fuels
B. Photosynthesis
C. Respiration
D. Deforestation
Correct : B. Photosynthesis
28. Which is the only country who has not ratified the Kyoto Protocol yet?
A. United States
B. Australia
C. Japan
D. India
Correct : A. United States
29. Ozone day is observed on
A. 3rd January
B. 16th September
C. 10th November
D. 26th March
Correct : B. 16th September
30. Ozone layer is present in
A. Troposphere
B. Mesosphere
C. Thermosphere
D. Stratosphere
Correct : D. Stratosphere
31. Which one of the following gases can deplete the ozone layer in the upper atmosphere?
A. Methane
B. Ammonia
C. Carbon tetrachloride
D. Sulphur dioxide
Correct : C. Carbon tetrachloride
32. Peeling of Ozone umbrella, which protects us from UV rays, is caused by
A. Carbon monoxide
B. CFCs
C. Coal burning
D. Methane
Correct : B. CFCs
33. Formation of hole in Ozone is maximum over
A. India
B. Europe
C. Antarctica
D. Africa
Correct : C. Antarctica
34. Increasing skin cancer and high mutation rate are the result of
A. Global warming
B. Ozone depletion
C. Acid rain
D. Pollution
Correct : B. Ozone depletion
35. Which of the following statements about ozone is true?
A. Ozone is a major constituent of photochemical smog
B. Ozone is highly reactive
C. It protects us from harmful UV radiations of sun
D. All of the above
Correct : C. It protects us from harmful UV radiations of sun
36. Thickness of ozone layer is measured in
A. Decibels
B. Dobson unit
C. Meter
D. Armstrong unit
Correct : B. Dobson unit
37. Chlorofluorocarbon releases a chemical harmful to ozone is
A. Chlorine
B. Fluorine
C. Carbons
D. Nitrogen peroxide
Correct : A. Chlorine
38. In the breakdown of the ozone layer, the ozone (O3) directly reacts with
A. Ultraviolet light
B. Chlorine atoms
C. Oxygen atoms
D. CFC molecules
Correct : B. Chlorine atoms
39. A population is a group of
A. Individual in a family
B. Individuals in a species
C. Communities in an ecosystem
D. Species in a community
Correct : B. Individuals in a species
40. The main cause of world population growth in 18th and 19th centuries was
A. Decrease in birth rates
B. Decrease in death rates
C. Industrial revolution
D. None of these
Correct : C. Industrial revolution
41. What is most important factor for the success of animal population?
A. Natality
B. Adaptability
C. Interspecies activity
D. Unlimited food
Correct : B. Adaptability
42. Human population growth is
A. Horizontal line
B. L-shaped curve
C. J-shaped curve
D. Parabola curve
Correct : C. J-shaped curve
43. The main factors contributing to the decline in death rate in 20th century were
A. Improved agricultural practices and increased birth rates
B. Improved health care, sanitation and nutrition
C. Endemic poverty and low levels of education
D. European colonization and improved agriculture practices
Correct : B. Improved health care, sanitation and nutrition
44. The world population in 2000 was approximately
A. 5.1 billion
B. 2.1 billion
C. 6 billion
D. 8 billon
Correct : C. 6 billion
45. The average life expectancy around the world is currently
A. Stable
B. Increasing
C. Decreasing
D. Not changing
Correct : B. Increasing
46. Exponential growth in population occurs when there is
A. A great environment resistance
B. No environment resistance
C. A fixed carrying capacity
D. No biotic potential
Correct : B. No environment resistance
47. The disease which wiped out 33% of population of Europe in the 12th and 13th centuries was
A. Cholera
B. Meningitis
C. Plague
D. Diphtheria
Correct : C. Plague
48. A human population is small, there is greater chance of
A. Mutation
B. Gene flow
C. Genetic drift
D. Natural selection
Correct : C. Genetic drift
49. Which of the following is a problem not associated with population growth?
A. Increased resource consumption
B. Environmental pollution
C. Food and energy shortages
D. None of these
Correct : D. None of these
50. Unrestricted reproductive capacity, in a population, is called
A. Birth rate
B. Carrying capacity
C. Fertility rate
D. Biotic potential
Correct : D. Biotic potential
51. The concept that “population increases geometrically while food supply increases arithmetically” was given by
A. Stuart Mill
B. Charles Darwin
C. Adam Smith
D. Thomas Malthus
Correct : D. Thomas Malthus
52. Population pyramids are useful to
A. Express the population growth rates
B. Indicate the birth rates
C. Indicate the death rates
D. Express age – sex distribution of a population
Correct : D. Express age – sex distribution of a population
53. The carrying capacity of a population is determined by
A. Population growth rate
B. Natality
C. Mortality
D. Limiting resources
Correct : D. Limiting resources
54. HIV is not likely to be transmitted by
A. Sharing needles of injections
B. Mosquito bites
C. Blood transfusion
D. Breast feeding
Correct : D. Breast feeding
55. Today, the world’s number one problem is:
A. Pollution
B. Population explosion
C. Nuclear proliferation
D. Natural calamities
Correct : B. Population explosion
56. Population explosion has occurred in the last
A. 500 years
B. 300 years
C. 400 years
D. 150 years
Correct : D. 150 years
57. Study of trends in human population growth and prediction of future growth is called
A. Demography
B. Psychology
C. Biography
D. Kalography
Correct : A. Demography
58. One of the critical mechanism by which the environment controls population of species is
A. Spread of disease
B. Removal of excreta
C. Supply of food
D. Control on death rate
Correct : D. Control on death rate
59. If the rate of addition of new member’s increases with respect to the individual lost of the same population, then the graph obtained has
A. Decline growth
B. Zero growth
C. Exponential growth
D. None of these
Correct : C. Exponential growth
60. The number of babies produced per thousand individuals is called
A. Natality
B. Mortality
C. Immigration
D. Emigration
Correct : A. Natality
61. The zero population growth due to equal birth and death rates is called
A. Fertility rate
B. Replacement level
C. Natural increase
D. Demographic transition
Correct : D. Demographic transition
62. Demographic features of developing countries are
A. High infant mortality, low fertility, young age distribution and uneven population growth
B. High fertility, high density, high mortality rate and young age distribution
C. High fertility, falling mortality rate, rapid population growth and young age distribution
D. High density, high mortality, uneven population growth and very old age distribution
Correct : C. High fertility, falling mortality rate, rapid population growth and young age distribution
63. Density of a population (D) is
A. D = S(size) / W(weight)
B. D = S(space) / N(number)
C. D = N(number) / S(space)
D. None of the above
Correct : C. D = N(number) / S(space)
64. Each environment supports a limited population depending upon its
A. Biotic potential
B. Carrying capacity
C. Natality
D. Reproductive potential
Correct : B. Carrying capacity
65. Group of interbreeding organisms found in a particular area is
A. Population
B. Community
C. Tribe
D. Density
Correct : A. Population
66. In India, human population has higher number of younger age group because of
A. Long life span and low birth rate
B. Short life span and high birth rate
C. Short life span and low birth rate
D. Birth rate is equal to death rate
Correct : B. Short life span and high birth rate
67. July 11 is
A. World Environment Day
B. World Population Day
C. World AIDS Day
D. World Education Day
Correct : B. World Population Day
68. Number of births per 1000 is
A. Growth rate
B. Conception rate
C. Reproduction rate
D. Crude birth rate
Correct : D. Crude birth rate