CBSE-NET (UGC) Environmental Science (Paper-II & Paper-III): Questions 203 - 207 of 376

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Question number: 203

» Fundamentals of Environmental Chemistry » Unsaturated and Saturated Hydrocarbons

Appeared in Year: 2015

MCQ▾

Question

The source of aliphatic hydrocarbon in indoor environment are: (June)

Choices

Choice (4) Response

a.

Aerosol sprays and solvents

b.

Solvents and vinyl flooring

c.

Paints, adhesives and gasoline

d.

Spirits and cleansers

Question number: 204

» Basics of Environmental Geosciences » Earth Systems and Biosphere » Relation Between Landscape, Biomes and Climate

Appeared in Year: 2015

MCQ▾

Question

Climate change has become a buzz word throughout the world. In case of the Himalayas the best way to infer whether there is a climate change or not is to:

(I) Monitor tree line

(II) Monitor migration of glaciers

(III) Study alteration in species composition

Choose the correct answer: (June)

Choices

Choice (4) Response

a.

(I) only

b.

(II) only

c.

(I), (II) and (III)

d.

(I) and (II) only

Question number: 205

» Water Chemistry » Chemistry of Water

Appeared in Year: 2009

MCQ▾

Question

Liquid ammonia can be used in refrigeration because of its – (December)

Choices

Choice (4) Response

a.

High basicity

b.

Non-toxic nature

c.

High dipole moment

d.

High heat of vaporization

Question number: 206

» Ecology and Evolution » Evolution

Appeared in Year: 2015

MCQ▾

Question

Long-term patterns of evolution are shaped by large scale process (s) such as:

(I) Speciation (II) Mass extinction (III) Adaptive radiation

Choose the correct answer: (June)

Choices

Choice (4) Response

a.

(I), (II) and (III)

b.

(I) and (III) only

c.

(I) only

d.

(II) and (III) only

Question number: 207

» Chemical Composition of Air » Classification of Elements

Appeared in Year: 2009

MCQ▾

Question

The mass of 1 mole of electron is equal to (December)

Choices

Choice (4) Response

a.

9.1094×6.16×1028g

b.

9.1094×1031×6.023×1023kg

c.

(9.1094×1031)/6.023×1023kg

d.

(6.023×1023)/6.1094×1028gm

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