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AE-JE Foundation CE: Environment Quiz 9

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Question 1

What is the acceptable noise level in decibel in Residential areas during night time?

Question 2

which of the following air pollutants are responsible for the greenhouse effect?

1) Methane

2) Carbon dioxide

3) Chlorofluorocarbons

4) Nitrogen oxides

Question 3

There are 20,000 vehicles operating in a city with an average annual travel of 12,000 km per vehicle. The

emission rate is 2.0 g/km per vehicle. The total annual release of

will be

Question 4

The frequency of sound a normal human being can hear is

Question 5

Elevation and temperature for places A, B and C are tabulated below :

Based on above data, for dry air lapse rate of place A to B and place B to C respectively are

Question 6

Which of the following units are used to measure level of noise?

(i) Bel

(ii) Decibel

(iii) μPa

(iv) W/m²

Question 7

Which one of the options contains ONLY primary air pollutants?

Question 8

Which one of the following is secondary pollutant?

Question 9

Calculate the sound pressure level (in dB) for a source having sound pressure of 5000 μPa.

Question 10

The sound generated by 4 sources are 96 dB, 75 dB, 68 dB and 54 dB respectively. The average sound pressure level due to these sources is

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Sep 16AE & JE Exams