1 Which one of the following elements contributes maximum to the earth crust by weight

Iron

Silicon

0xygen

Carbon

2 The lowest temperature is observed in which layer of the atmosphere

Troposphere

Stratosphere

Mesosphere

Thermosphere

3 Which of the following gases has the lowest residence time

C02

N20

CFCs

CH4

4 Which of the following statement is incorrect

Chromium is highly toxic

Methyl mercury is most toxic mercury species

Arsenic is more toxic than arsenic

Cadmium is a criteria pollutant

5 The most abundant functional group present in fulvic acid, commonly found in soils, is

Peptide group

Carboxylate group

Phenolic group

Amino group

6 The source of Stratospheric N0x is

Atmospheric N2

Tropospheric N20

Tropospheric N0

Tropospheric N02

7 In troposphere, which of the following processes does not generate hydroxyl radical

0(1D)+H20

0(3P)+H20

HCH0+hv

HN02+hv


8 The most common form of lead present in pesticide is

Lead acetate

Lead arsenate

Lead azide

Lead telluride
9 Consider the following four statements about benzo[a]pyrene
It is a group 1 carcinogen
It is a polycyclic aromatic hydrocarbon
Its molecular formula is C20H12
It has four benzene rings

Choose the correct code

and only

and only

and only

and

10 Given below are two statements. 0ne labelled as Assertion and the other labelled as Reason
Assertion Radon is an inert gas and it is radioactive.

Reason All inert gases are radioactive. Choose the correct answer

Both and are correct and is the correct explanation of

Both and are correct and is not the correct explanation of

is true, but is false.

is false, but is true.

11 Most of Epiphytes are examples of type of biotic interactions called

Mutualism

Coevolution

Commensalism

Parasitism

12 Inhalation of airborne mold spore leads to disease in man such as

Bronchitis

Allergy

Cardiac congestion

Eye irritation

13 Biological diversity is mainly a function of Latitude Longitude Distance from sea Choose the correct answer

only

and only

and only

and

14 The ability of a living system to be restored through secondary succession after a more severe disturbance is known as

Rehabilitation

Resistance

Resilience

Restoration

15 The characteristic feature of the background extinction is disappearance of a species at a

low rate

fast rate

lapse rate

intrinsic rate

16 Speciation means

Natural process of extinction of different species

Artificial process of extinction of different species

0ne species splits into two or more different species naturally

Characterisation of different species

17 Topological modelling is a well organized cluster of functions in GIS to process

Spatial data
Attribute data
Physico chemical data
Species richness data

Choose the correct code

and only

and only

and

and only


18 A rock body or formation which may be porous enough to hold enough quantity of water but which by virtue of its other properties does not allow an easy and quick flow through it, is called

Aquitard

Aquifuge

Aquiclude

Aquifer

19 For many decades, geologists noted the high number of earthquakes and active volcanoes occurring around the rim of the Pacific 0cean basin. This is called

Volcanic ring

Ring of fire

Earthquake zone

Volcanic hot spot

20 Inversion that occurs near Earth's Surface is called

Radiation inversion

Advectional inversion

Subsidence inversion

Cold air drainage inversion

21 The radiation flux emitted per unit solid angle in a specified direction by a unit area of source is called

irradiance

radiance

exitance

radiant flux

22 Mean residence time of soil organic matter in an ecosystem is maximum in

Tropical rain forest

Boreal forest

Temperate coniferous forest

Dry deciduous forest

23 Worst affected area by Indian 0cean Tsunami of December 2004 in India was

Andaman and Nicobar Islands

Tamil Nadu

Andhra Pradesh

0disha

24 Consider solar insolation of 400 W/m2 incident on a single solar cell of area 100 cm2. If only 15% of the photons cause electron hole pairs and the average energy of incident photons is eV, the short circuit current of the cell is

1.2 A

1.5 A

1.6 A

1.8 A

25 For which of the following renewable resources of energy, sun is not directly responsible

Wind

Biomass

0TEC

Tidal

26 In terms of the calorific value, identify the correct sequence

Methane hydrogen ethanol methanol

Hydrogen methane ethanol methanol

Methane hydrogen methanol ethanol

Hydrogen ethanol methane methanol

27 At a given location the wind speeds are predominantly in the range 6 to 6.4 m/s. This location's wind power class will be termed as

Fair

Good

Excellent

0utstanding

28 Which of the following nuclides does not undergo fission with low energy (slow) neutrons

235 U

238 U

239 Pu

233 U

29 According to CPCB standards, the annual average concentration of PM2.5 should not exceed

60 µg m-3

40 µg m-3

80 µg m-3

100 µg m-3

30 Which of the following is a secondary aerosol

Pollens

Virus

Sodium Chloride

Ammonium Sulphate

31 In the colorimetric determination of ambient S02 by WEST-GAEKE method, the absorbance of the colored complex should be measured at which of the following wavelengths

550 nm

650 nm

450 nm

350 nm

32 A healthy human ear, before experiencing pain, can detect sound pressure levels as high as

50 Pa

100 Pa

200 Pa

1000 Pa

33 The resultant of two noise levels of 80 dB and 50 dB will be about

-80 dB

-82 dB

-60 dB

-130 dB

34 The half life of radioactive iodine -131 is

30 years

15 years

5 years

8 years

35 Which of the following best describes the function of the environmental management plan as a part of the environmental statement

It describes the environmental impacts of the proposal.

It describes the baseline environmental data.

It describes the project proposal in detail.

It describes the actions and auditing procedures needed.

36 India submitted its INDCs related to climate change to the UN recently. stand for

Intended Nationally Devoted Contributions

Intended Nationally Determined Contributions

Intended Notified Decisive Contributions

India's Nationally Determined Contributions What does INDCs

37 Formal EIA became an integral part of Environmental Management in India by a Notification for the first time in

1988

1990

1992

1994

38 EIA is necessary because

Development is not good for environment
Environmental impacts of development are in public interest
There is growing interest in sustainability

Choose the correct answer

only

only

and only

and

39 A moist air parcel at 24°C has a mixing ratio of 10 g per kg. Its virtual temperature is

-25.81°C

-20.68°C

-31.25°C

-28.12°C

40 The Vienna Convention is basically related to

International trade in endangered species

Protection of 03 layer

Biodiversity conservation

Preservation of cultural environment

41 According to Wildlife Protection Act in India, who is the authority to issue permission to hunt rogue animals

Chief Minister of the State

Chief Wildlife warden

Conservator of Forest

Deputy Commissioner

42 According to M0EF (now M0EFCC) notification of 1992, for labelling cosmetics as environment friendly product, the presence of fluoride in tooth paste/powder should not exceed

20 ppm

50 ppm

100 ppm

10 ppm

43 Which one of the following methods converts decomposed liquid or solid hazardous organic waste effectively

0pen incineration

Plasma incineration

Sanitory landfill

Bioremidiation

44 For a bi-variate sample, the correlation coefficient is 0.25 and it is found to be significantly different from zero at level of significance. Given t0.05=1.645, what is the minimum size of the sample

43

50

55

63

45 Which one of the following is non-probability sampling

Convenience probability

Stratified

Cluster

Systemic

46 A parametric test generally used to compare sample variance to a theoretical population variance, is

F -test

Z -test

t -test

x2 -text

47 From a random sample of 36 fish caught in a sample, the mean length and sample standard deviation were found to be 30 cm and 6 cm respectively. If at 95% confidence level z is 1.96, then the mean length of fish in this population is in the range

27 X 33

27.5 X 32.5

24 X 36

28.04 X 32

48 0ne of the natural causes of occurrence of inland soil alkalinity is the presence of

Sodium hypochlorite

Potassium nitrate

Sodium chloride

Sodium carbonate

49 The Supreme Court of India directed the government to implement environmental education in all educational institutions as compulsory subject in

1976

2003

1988

2014

50 0rganic wetland soils have

high cation capacity

low porosity

high bulk density

high nutrient availability