TLS Online

Previous Year Questions

TLS Online TPP Program

QUESTION ID:1

Match:List;_l(Clay Minerals) with List-II (Cation Exchange Capacity-in cinol(+) .kg-1)

List-I (Clay Minerals) List - ii Cation Exchange Capacity -1 in emol (+) kg¹)

Vermiculite 5-25

Smectite 20-40

Illite 100-120

Kaolinite 150-160

Choose the correct answer from the options given below

(a)-(iv); (b)-(i); (c )-(iii).; ( d)-{ii)

(a)- (i-ii);. (b)-(ii); ( c)- (iv); (d)-(i)

(a)-(i); (b)-.(ii); (c).-(ili); (d)-(iv)

(a)-(iv); (b}-(ili); (c)-{ii); (d)-(i)

https://triyambak.org/courses/ugc-net-environmental-science/tpp/pyq?qid=25934&year=2019&month=June

QUESTION ID:2

In urban atmosphere the concentration of CH4 and OH radical is molecules 5 x 10¹⁹ m³and 1.8 X 10³ molecules m^-3 respectively the rate constant for 2nd order reaction between OH and methane is8.36 x 10²¹

3.26 x 10^¹¹molecules m-³s-1

2.52 x 10¹²molecules m-³s-1

7.52 x 10^¹¹molecules m-³s-1

7.52 x 10¹²molecules m-³s-1

https://triyambak.org/courses/ugc-net-environmental-science/tpp/pyq?qid=25935&year=2019&month=June

QUESTION ID:3

Computation of radiative forcing due to Greenhouse Gas does NOT involve

Concentration of the Greenhouse Gases present in the atmosphere

Lapse rate of the atmosphere

Wavelength at which the gas molecules absorb

Intensity ofthe absorpti-on·per molecule

https://triyambak.org/courses/ugc-net-environmental-science/tpp/pyq?qid=25936&year=2019&month=June

QUESTION ID:4

In a typical solar pond which region has the salt concentration gradient

Surface. convective zone

Non convective zone

Lower convective. zone

Entire solar pond

https://triyambak.org/courses/ugc-net-environmental-science/tpp/pyq?qid=25937&year=2019&month=June

QUESTION ID:5

In the model of r- and k selection rate of increase of two species are portrayed as function of

Population·density

Resource density

Habitat

Size

Choose the correct answer from the options given below :

(a) and(c)

(a) and (b)

(b) and (d)

https://triyambak.org/courses/ugc-net-environmental-science/tpp/pyq?qid=25938&year=2019&month=June

QUESTION ID:6

Given below are two statements one labelled as Assertion (A) and.the other labelled as

Reason(R).

Assertion.(.A) : In the Himalayas north-facing slopes have luxuriant growth of forests,whereas shruby drought - resistant vegetation inhabits the south- facing slopes

Reason (R)

South facing slopes in the northen hemisphere receive more sunlight than nearby north - facing slopes and ,therefore are warmer and drier .

Choose the correct answer from the options given below :·

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 explanationof(A)

(A) is true, but(R)is false

(A) is false but(R).is true

https://triyambak.org/courses/ugc-net-environmental-science/tpp/pyq?qid=25939&year=2019&month=June

QUESTION ID:7

Which microbial metabolism involves immobilisation of soluble .metal species by forming complexing agents.like metal sulphides, .metal carbonates and metal phosphates?

Biosorption

Bioaccumulation

Solubilization

Bioprecipitation

https://triyambak.org/courses/ugc-net-environmental-science/tpp/pyq?qid=25940&year=2019&month=June

QUESTION ID:8

The first State to be declared as an. organic State. ofthe country is

Sikkim

Uttarakhand

Himachal Pradesh

Kerala

https://triyambak.org/courses/ugc-net-environmental-science/tpp/pyq?qid=25941&year=2019&month=June

QUESTION ID:9

Which among. the following substances is responsible for global cooling instead of global warming?

Black carbon

Nitrous oxide

Sulphate aerosols

HCFC

https://triyambak.org/courses/ugc-net-environmental-science/tpp/pyq?qid=25942&year=2019&month=June

QUESTION ID:10

Major environmental impacts of the Tehri dam in the Central Himalaya are :

Submergence of fertile agricultural lands

Reservoir induced seismicity

Increased incidences of landslides in the reservoir rim

Loss of biodiversity

Choose the correct option

(a) and. (b) only

(a) and (c) .only

(a) and (d) only

(a);(b), (c).and (d)

https://triyambak.org/courses/ugc-net-environmental-science/tpp/pyq?qid=25943&year=2019&month=June

QUESTION ID:11

Sustainable development presupposes

Maintenance of ecosystem integrity

Improvemerit in economic and social conditions of people

Perpetual availbility of ecosystem services

Choose the correct option:

(a), (b) and (c)

a) and (b) only

(a) and (c) only

(b) and (c)only

https://triyambak.org/courses/ugc-net-environmental-science/tpp/pyq?qid=25944&year=2019&month=June

QUESTION ID:12

For a negatively skewed distribution, which is the. correct relation?

Arithmetic mean < Median < Mode

Arithmetic mean < Mode < Median

Arithmetic mean > Mode > Median

Median = Mode > Arithmetic mean

https://triyambak.org/courses/ugc-net-environmental-science/tpp/pyq?qid=25945&year=2019&month=June

QUESTION ID:13

Which Article of. the Indian Constitution was used by Government of india to enact the Envirorunental Protection Act (EPA), 1986?

48A

253

251

51 A(g)

https://triyambak.org/courses/ugc-net-environmental-science/tpp/pyq?qid=25946&year=2019&month=June

QUESTION ID:14

In a breeder reactor

Neuttons first convert.a fertile material into fissile material and·then sustain the fission recation

Neutrons· first start the fission reaction and fissile material is a by product

Fissile ·material ·produces fertile matetial

Ratio· of amount of fissile material produced to fissile material .consumed should be less than one ·

https://triyambak.org/courses/ugc-net-environmental-science/tpp/pyq?qid=25947&year=2019&month=June

QUESTION ID:15

In. a population, where the allele frequency shifts by a random chance, the mechanism of evolution at work is.

Co-evolution

Mutation

Natural selection

Genetic drift

https://triyambak.org/courses/ugc-net-environmental-science/tpp/pyq?qid=25948&year=2019&month=June

QUESTION ID:16

Maximum concentration hydroxyl radical in earth's atmosphere is observed at

The equator, in middle troposhere

The poles, in middle of troposhere

The equatorial surface

The Tropic of Cancer

https://triyambak.org/courses/ugc-net-environmental-science/tpp/pyq?qid=25949&year=2019&month=June