Environmental Studies Questions and Answers - Set 27 | Environmental Studies Quiz GkSeries

Questions

1 For untreated municipal wastewater, BOD/COD ratio is in the range

1 1.3 – 3

2 0.3 – 0.8

3 3.0 – 6.5

4 > 10

View Answer

Answer: 0.3 – 0.8

2 The ionic species, O+, O2+ and N2+ are found generally in

1 Troposphere

2 Stratosphere

3 Mesosphere

4 Heterosphere

View Answer

Answer: Heterosphere

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3 As part of recently signed international agreement on phasing out synthetic hydrofluorocarbons (HFCs), India will start phasing them out from the year

1 2019

2 2024

3 2028

4 2032

View Answer

Answer: 2028

4 In the tropospheric ozone formation reaction sequence, which of the following chemical species does not act as a catalyst ?

1 OH

2 HO2

3 NO2

4 O2

View Answer

Answer: O2

5 Which of the following power plants releases radioactive materials as well as hazardous metals such as lead and arsenic under normal operating conditions ?

1 Nuclear power plant

2 Solar power installations

3 Hydro power

4 Coal based thermal power plants

View Answer

Answer: Coal based thermal power plants

6 In term of atmospheric residence times, identify the correct sequence :

1 NOx > CF4 > CH3Br > CH3

2 CH3 > CH3Br > CF4 > NOx

3 CH3Br > NOx > CH3 > CH4

4 CF4 > NOx > CH4 > CH3Br

View Answer

Answer: CF4 > NOx > CH4 > CH3Br

7 The surface winds generally blow from the east in the areas over

1 Tropical Equator zone

2 Midlatitudinal zone

3 6 μg/LHigh latitudinal zone

4 Subtropical zone

View Answer

Answer: Tropical Equator zone

8 Period (epoch) associated with the interference of human beings with nature is termed as

1 Eocene

2 Miocene

3 Anthropocene

4 Holocene

View Answer

Answer: Anthropocen

9 The harmonic mean of the number 5, 10 and 20 is

1 ~ 2.51

2 ~ 6.25

3 ~ 8.57

4 ~ 2.857

View Answer

Answer: ~ 8.57

10 Choose the correct statement among the following :

1 The upper asymptote of the sigmoid curve of a population represents carrying capacity

2 In ‘J’ form of population growth, the equilibrium level is not imposed by environmental factors

3 All population growth forms are independent of environment.

4 In ‘J’ shaped growth curve, a relatively un-restricted growth suddenly halt only due to diapause.

View Answer

Answer: The upper asymptote of the sigmoid curve of a population represents carrying capacity

11 Trophic relationship between an arbitrary number of species can best be explained using

1 Leslies matrix model

2 Lefkovitch matrix

3 Generalized Lotka-Volterra equation

4 Box model

View Answer

Answer: Generalized Lotka-Volterra equation

12 The length (cm) of six earthworms used in an experiment are 5.37, 5.11, 6.42, 7.26, 3.99 and 2.6. Corresponding weight (g) are 5.88, 6.35, 8.11, 8.36, 4.40 and 3.5 respectively. The relationship between length and weight of the earthworms is

1 –vely correlated

2 +vely correlated

3 non-correlated

4 insignificantly correlated

View Answer

Answer: +vely correlated

13 The geometric mean of the number 1, 4 and 16 is :

1 6

2 3

3 4

4 2

View Answer

Answer: 4

14 Mercury is particularly hazardous to the human health because :

1 As a pure metal it is soluble in water, hence can easily be absorbed through drinking water.

2 It is light and volatile and so is widely dispersed through the environment

3 It bioaccumulate high up in the food chain.

4 It can cause serious impact by physical contact.

View Answer

Answer: It bioaccumulate high up in the food chain.

15 According to the Public Liability Insurance Act, 1991, the inquiry on an application for relief is conducted by

1 C.E.O.

2 Session Judge

3 Collector

4 Police Commissioner

View Answer

Answer: Collector

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