41. The arsenic contamination of drinking water is highest in
Chennai
Kanpur
Kolkata
Mumbai
42. Assertion (A): The Ganga is a highly polluted river. Reason (R): The holier the river, the more polluted it is. Select the correct answer from the following codes: Code:
Both (A) and (R) are true and (R) is the correct explanation of (A).
Both (A) and (R) are true, but (R) is not the correct explanation of (A).
(A) is true, but (R) is false.
(A) is false, but (R) is true.
43. The highest chemical pollution is caused by the industrial effluents of
Leather industry
Paper industry
Rayon industry
Textile industry
44. The concept of ecological niche was enunciated by
Greenels
Darwin
E.P. Odum
C.C. Park
45. Which one of the following is not related with ecological balance?
Water management
Afforestation
Industrial management
Wildlife protection
46. Which one of the following trees is considered to be an environmental hazard?
Babul
Amaltas
Neem
Eucalyptus
47. A species is considered to be extinct if it has not been seen in its natural habitat for
15 years
25 years
40 years
50 years
48. Man-made pollutants are called
Xenobiotics
Antibiotics
H malins
Analgesics
49. Environment refers
to the natural world of land, water, air, plants and animals that exist around it
to the sum total of conditions which surround man at a given point of time
the interacting systems of physical, biological and cultural elements which are interlinked
All of these
50. Environmental degradation means
overall lowering of environmental qualities
adverse changes brought in by human activities
ecological imbalance because of ecological diversity
All of these
51. The gas which emits from a rice field is
ethane
methane
nitrogen
All of these
52. A water body having high B.O.D. indicates that its water is
receiving minerals
being aerated
being contaminated by sewage
atrophic
53. Tree suitable for controlling dust pollution is
Sita Ashok
Mahua
Poplar
Neem
54. For better survival of the human population, which of the following steps is most important?
Afforestation
Ban on mining activity
Conservation of wildlife
Reducing the use of natural resources
55. Famous Blair Reef near Port Blair is dying due to
excessive fishing
excessive shipping
global warming
excessive dumping of saw-dust
56. From the list given below, select the one which is declared a “World Heritage Site”.
Corbett National Park
Nanda Devi Biosphere Reserve
Rajaji National Park
Gir Forest
57. Select the State from amongst the following with the maximum number of wildlife sanctuaries (National Parks and Sanctuaries):
Uttar Pradesh
Rajasthan
Madhya Pradesh
West Bengal
58. The National Environment Engineering Institute is located in
Cuttack
Jamshedpur
Nagpur
Ranchi
59. Which of the following statements about Radioactive pollution are correct? 1. It causes 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 codes given below: Codes:
1 and 2
1 and 4
1, 3 and 4
2, 3 and 4
60. Which one of the following is the most important factor responsible for decline of bio-diversity?
Genetic assimilation
Controlling assimilation
Destruction of habitat
Controlling pests
12 Total Test
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