PSC Environment Programme Manager Model Questions and Answers

51. Acid rain is a result of, upset of
(A) Carbon cycle
(B) N2 cycle
(C) Sulphur cycle
(D) Both (B) and (C)
Answer: D

52. The progressive accumulation of non-biodegradable chemicals through the food chain is called
(A) Biomagnification
(B) Biodegradation
(C) Bioremediation
(D) Ecological balance
Answer: A

53. Red data list include those species that are
(A) Harmful to human
(B) Facing the risk of extinction
(C) Responsible for pollution
(D) Abundant in nature
Answer: B

54. The species that are confined to a particular geographical area are
(A) Rare species
(B) Vulnerable species
(C) Endemic species
(D) Endangered species
Answer: C

55. Which of the following is an example of In Situ biodiversity conservation?
(A) Biosphere Reserves
(B) Gene Bank
(C) Sanctuary
(D) All of these
Answer: A

56. The place where one would go to find a particular organism is known as
(A) Factor
(B) Biomass
(C) Species
(D) Habitat
Answer: D

57. Human exposure to radiation is generally measured in
(A) Rems
(B) Curie
(C) Rads
(D) Sievert
Answer: A

58. ISO 14000 Standards deal with
(A) Pollution management
(B) Environmental management
(C) Risk management
(D) None of these
Answer: B

59. The brightness of famous Taj Mahal is decreased due to
(A) Global warming
(B) Acid rain
(C) Ozone layer depletion
(D) Deforestation
Answer: B

60. Suppose you live in the city of Delhi with average annual rainfall, 910 mm. Your house has a terrace area of 100 sq.m. How much of rainwater can you collect in a year?
(A) 910 cu.m.
(B) 0.91 cu.m.
(C) 91 cu.m.
(D) 0.09 cu.m.
Answer: C

61. Objective of Integrated Pest Management is
(A) Irradication of pest
(B) Encouragement of pest
(C) Keep pest population below a threshold level
(D) None of these
Answer: C

62. Splash erosion is influenced by
(A) Rainfall intensity
(B) Rain drop size
(C) Both (1) and (2)
(D) Only rainfall intensity
Answer: C

63. Heavy metal contents in water sample is measured by
(A) Atomic Absorption Spectrophotometer
(B) Gas Chromatograph
(C) HPLC
(D) TOC Analyzer
Answer: A

64. Which of the following is used as biopolymer for synthesis of bioplastics?
(A) Poly Hydroxy Butarate
(B) Starch
(C) Fatty acid
(D) All of these
Answer: D

65. The process in which large and heavy soil particles (> 0.5 mm diam.) are moved is
(A) Suspension
(B) Surface creep
(C) Saltation
(D) All of these
Answer: B

66. Fate of chemical pesticide in soil is
(A) Volatilization
(B) Leaching
(C) Uptake and Degradation
(D) All of these
Answer: D

67. Sheet erosion is related to
(A) Land with mild and uniform slope
(B) Forest land
(C) Grass land
(D) None of these
Answer: A

68. Basic principle of separation in Paper Chromatography is
(A) Adsorption
(B) Partition
(C) Ion exchange
(D) None of these
Answer: B

69. Parts Per Million (PPM) means
(A) mg/L
(B) μg/mL
(C) Both (A) and (B)
(D) None of these
Answer: C

70. Autoclaving is
(A) Red heat sterilization
(B) Chemical sterilization
(C) Dry heat sterilization
(D) Moist heat sterilization
Answer: D

71. MPN test enumerates
(A) `ul{text{E.coli}}` only
(B) Coliforms
(C) Fungi
(D) Viruses
Answer: B

72. The main cause of Fukushima Power Plant Accident was
(A) Tsunami
(B) Faulty Reactor Design
(C) Human error
(D) Safety violations
Answer: A

73. When input of water is more than output of water the condition called as …………… is created in field.
(A) Water logging
(B) Wet land
(C) Acidic soil
(D) Alkalinity
Answer: A

74. Which of the following is a principle of Green chemistry?
(A) 100% efficient conversion
(B) No or low energy
(C) Less hazardous chemical use
(D) All of these
Answer: D

75. The material used as biosensor is
(A) Antibody
(B) Hormone
(C) Neural receptor
(D) All of these
Answer: D