Introduction of Environmental Science-Physico-Chemical and Biological Factors in Environment (CBSE-NET (UGC) Environmental Science (Paper-II & Paper-III)): Questions 1 - 4 of 4

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Question number: 1

» Introduction of Environmental Science » Physico-Chemical and Biological Factors in Environment

Appeared in Year: 2011

Match List-Ⅰ List-Ⅱ▾

Question

Match the List – I and List – II. Identify the correct answer from the codes given below the lists: (December)
List-Ⅰ (Domain) List-Ⅱ (Effects)

(A)

Water quality

(i)

BOD and COD

(B)

Soil environment

(ii)

Barrier to travel corridors

(C)

Wildlife

(iii)

Employment opportunities

(D)

Socioeconomics

(iv)

Erosivity & Erodability

Choices

Choice (4) Response
  • (A)
  • (B)
  • (C)
  • (D)
a.
  • (iii)
  • (iv)
  • (ii)
  • (i)
b.
  • (i)
  • (iv)
  • (iii)
  • (ii)
c.
  • (i)
  • (ii)
  • (iv)
  • (iii)
d.
  • (i)
  • (iv)
  • (ii)
  • (iii)

Question number: 2

» Introduction of Environmental Science » Physico-Chemical and Biological Factors in Environment

Appeared in Year: 2009

MCQ▾

Question

Doppler effect is not commonly observed using light, because: (June)

Choices

Choice (4) Response
a.

Object has to be moving at a speed that is a significant fraction of the speed of light.

b.

Sound is audible

c.

Velocity of sound is much smaller than that of light

d.

Light is an electromagnetic wave

Question number: 3

» Introduction of Environmental Science » Physico-Chemical and Biological Factors in Environment

Appeared in Year: 2009

MCQ▾

Question

A cyclist starting from stand still accelerates at 0.4 msec2 for 10 seconds.

(a) What velocity does it reach and

(b) the distance it covers: (June)

Choices

Choice (4) Response
a.

(a) 2msec1 (b) 20m

b.

(a) 4msec1 (b) 20m

c.

(a) 4msec1 (b) 10m

d.

(a) 2msec1 (b) 10m

Question number: 4

» Introduction of Environmental Science » Physico-Chemical and Biological Factors in Environment

Appeared in Year: 2009

MCQ▾

Question

As per temperature of an n-type semiconductor increases, the number of hole: (June)

Choices

Choice (4) Response
a.

Does not change but the number of electrons increases

b.

Decreases but the number of electrons increases

c.

Increases but the number of electrons does not change

d.

Increases but the number the electrons decreases

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