Energy Resources (CBSE-NET (UGC) Environmental Science (Paper-II & Paper-III)): Questions 30 - 34 of 34

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Question number: 30

» Energy Resources » Fossil Fuels » Coal

Appeared in Year: 2011

MCQ▾

Question

Chemically coal is composed of

(i) Carbon (ii) Hydrogen (iii) Oxygen (iv) Sulphur and/or Nitrogen – (December)

Choices

Choice (4) Response

a.

Only (i) and (ii)

b.

Only (i), (ii) and (iii)

c.

Only (i), (ii) and (iv)

d.

All a. , b. and c. are correct

Question number: 31

» Energy Resources » Global Warming

Appeared in Year: 2011

MCQ▾

Question

Which of the following gases has the maximum global warming potential (GWP) lifetime? – (December)

Choices

Choice (4) Response

a.

Carbon-dioxide

b.

Methane

c.

Nitrous oxide

d.

Water vapour

Question number: 32

» Energy Resources » Radioactive Waste and Radioactivity From Nuclear Reactors

Appeared in Year: 2009

MCQ▾

Question

After 560 days, 1 gm of a radioactive element is reduced to 116gm. The half-life of the radioactive element is:

Choices

Choice (4) Response

a.

280 days

b.

140 days

c.

70 days

d.

210 days

Question number: 33

» Energy Resources » Anaerobic Digestion

Appeared in Year: 2009

MCQ▾

Question

Which of the following bacterium is used in the recovery of otherwise unprofitable grades of Uranium and Copper ores? (June)

Choices

Choice (4) Response

a.

Azotobactor

b.

Thiobacillus ferrooxidans

c.

Escherichia coli

d.

Clostridium

Question number: 34

» Energy Resources » Sun as Source of Energy » Spectral Characteristics

Appeared in Year: 2009

MCQ▾

Question

A microwave source has a wavelength of 4 cm. Given then their speed is 3×108msec1, the frequency is:

Choices

Choice (4) Response

a.

12.0GHZ

b.

7.5GHZ

c.

7.0GHZ

d.

14.0GHZ

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