Air, Noise Pollution and Ecology [IES-ESE (Engineering Services) Civil Engineering]: Questions 1 - 3 of 6

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Question 1

Appeared in Year: 2017

Question MCQ▾

Consider the following statements regarding air pollution:

  1. The pollutant caused by incomplete combustion of organic matter is carbon monoxide.
  2. Depletion of ozone in outer atmosphere may trigger skin.
  3. Acid rains are caused by and .
  4. The permissible standard for in air for residential areas in India is .

Which of the above statements are correct?

Choices

Choice (4)Response

a.

1,3 and 4 only

b.

1,2, 3 and 4

c.

1,2 and 3 only

d.

2 and 4 only

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Question 2

Appeared in Year: 2017

Question Assertion-Reason▾

Assertion(Ꭺ)

Tiny quantities of over 30 rare gases would warm the atmosphere over the Earth more rapidly than

Reason(Ꭱ)

A single molecule of some CFCs, methane and nitrous oxide absorbs as much heat as molecules, 25 molecules and molecules of , respectively.

Choices

Choice (4)Response

a.

Ꭺ is true but Ꭱ is false

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Both Ꭺ and Ꭱ are false

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

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Question 3

Appeared in Year: 2015

Question MCQ▾

Consider the following statements related to noise:

(1) The range of sound power and sound pressures produced is from bars to bars.

(2) Human ears do not respond linearly to increase in sound pressures.

(3) Regular exposure to moderate noise makes the human ear more resistant to occasional exposures of high-intensity noise.

Which of the above statements are correct?

Choices

Choice (4)Response

a.

1 and 2 only

b.

1 and 3 only

c.

2 and 3 only

d.

Question does not provide sufficient data or is vague

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