CBSE-NET (UGC) Environmental Science (Paper-II & Paper-III): Questions 325 - 330 of 376

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Question number: 325

» Ecosystems » Population

Appeared in Year: 2011

MCQ▾

Question

The population (N) of an ecosystem follows logistic growth. If K is its carrying capacity, then the environmental resistance is – (December)

Choices

Choice (4) Response
a.

N2K

b.

1NK

c.

NK

d.

NK

Question number: 326

» Environmental Protection Act » International and National Efforts for Environment Protection

Appeared in Year: 2009

MCQ▾

Question

Rachael Carson in her book Silent Spring has raised concern on – (December)

Choices

Choice (4) Response
a.

Climate change

b.

Economical & social impacts

c.

Deforestation

d.

Impacts of agro-chemicals on ecological functions

Question number: 327

» Ecosystems » Abiotic and Biotic Components

MCQ▾

Question

Successive increase in concentration of some chemicals through different food level organisms is called – (December)

Choices

Choice (4) Response
a.

Biological magnification

b.

Chemical production

c.

Biodegradation

d.

Biogeochemical cycle

Question number: 328

» Common Flora and Fauna in India » Terrestrial

Appeared in Year: 2011

MCQ▾

Question

An aquatic system is essentially a single phase system while terrestrial system is a – (December)

Choices

Choice (4) Response
a.

Two phase system

b.

Three phase system

c.

Four phase system

d.

Multiple phase system higher than having four phases

Question number: 329

» Introduction of Environmental Science » Inversions and Mixing Heights

Appeared in Year: 2011

MCQ▾

Question

Inversions occur when atmosphere is – (December)

Choices

Choice (4) Response
a.

Slightly stable

b.

Most stable

c.

Neutral

d.

Unstable

Question number: 330

» Basics of Environmental Geosciences » Environmental Geochemistry » Geochemical Cycles

Appeared in Year: 2009

MCQ▾

Question

The geochemical weathering process can be viewed as – (December)

Choices

Choice (4) Response
a.

Clayminerals+CO2Quartz+Al2O3

b.

Clayminerals+H2OFe2O3+Al2O3+SiO2+CaO

c.

Primarysilicate+CO2+H2Oclayminerals+cations+HCO3+H4SiO4+H+

d.

Primarysilicate+H2OAl2O3+SiO2+CaO+H+

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