In troposphere (the weather domain), the temperature ‘t’ at height ‘h’ above the spa level in metres is given by (where, temperature at sea level is 15°C and t is in °C ?

Related Mcqs:

1. There are five concentric layers within the atmosphere which is differentiated on the basis of temperature. The atmospheric layer which lies close to the earth’s surface in which human being along with other organisms live is called troposphere. The rate at which air temperature in the troposphere gradually decreases with height is about _____________ °C/km?

   A. 0.05
   B. 1
   C. 6.5
   D. 15

2. The concentration of water vapour in troposphere, which depends upon the altitude & temperature, varies in the range of zero to ______________ percent?

   A. 1
   B. 4
   C. 8
   D. 12

3. Noise level heard at a distance of about 100 metres from a jet engine with after burner is about _____________ decibels?

   A. 120
   B. 140
   C. 170
   D. 200

4. Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate ?

   A. CO
   B. SO2
   C. NOx
   D. CFC (chloro fluoro carbons)

5. Hazardous/polluting chemical industries should have an ‘exclusion zone’ with a green belt and general public access prohibited around it, covering a radius of _____________ metres?

   A. 100
   B. 1000
   C. 400
   D. 4000

6. Sound produced by an automobile horn heard at a distance of 1.5 metres corresponds to about ______________ decibels?

   A. 90
   B. 120
   C. 150
   D. 180

7. Noise emitted by a ventilation fan at a distance of 3 metres is about _____________ decibels?

   A. 85
   B. 105
   C. 125
   D. 145

8. The earth’s atmosphere is an envelope of gases present upto a height of about ______________ kms?

   A. 10
   B. 200
   C. 1000
   D. 2000

9. A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of _____________ high above earth’s atmosphere, which absorbs it?

   A. Hydrogen
   B. Carbon dioxide
   C. Ozone
   D. None of these

10. Salt content in sea water is about ______________ percent?

    A. 0.5
    B. 1
    C. 3.5
    D. 9.05