MCQs on Environment

                                                                                                                                                                   Proff. R. S. Sengar

1. The incoming solar radiation in the form of sort wave radiation after striking the earth’s surface gets converted into long wave radiation due to:

(a) Water        

(b) Cloud

(c) Humidity     

(d) Surface temperature

Ans. D

2. The percentage of water vopour in atmosphere by volume:

(a) 0–0.5%        (b) 0–4%

(c) 0–10%         (d) 1–30%

Ans. B

3. The transition layer between the outermost reach of the atmosphere and interplanetary space with extremely low density of molecules is called:

(a) Exosphere (b) Stratosphere

(c) Mesosphere   (d) Troposphere

Ans. A

4. The gas which highly detrimental for the Ozone layer:

(a) Ruling        (b) Halogenated gas

(c) Liquefied gas  (d) Incendiary gas

Ans. B

5. Plants produce oxygen through:

(a) Excretion      (b) Transportation

(c) Photosynthesis (d) Respiration

Ans. C

6. The name of the lowest portion of the Earth’s atmosphere, it contains approximately 75% of the atmosphere’s mass and 99% of its water vapour and aerosols:

(a) Exosphere (b) Troposphere

(c) Stratosphere   (d) Mesosphere

Ans. B

7. In the atmosphere, which of the following gases account for about 99% by volume?

(a) Methane, Helium, Xenon

(b) Argon, Neon, Krypton.

(c) Hydrogen, Methane, Helium

(d) Nitrogen, Oxygen, Carbon dioxide

Ans. D

8. The ozone layer is situated in the part of the atmosphere:

(a) Stratosphere   (b) Thermosphere

(c) Mesosphere   (d) Troposphere

Ans. A

9. The lapse rate is defined as the actual change of temperature with altitude for the stationary atmosphere. What is the lapse rate of temperature in troposphere?

(a) 25.00C/km     (b) 15.20C/km

(c) 10.00C/km     (d) 6.50C/km

Ans. D

10. The phenomenon is responsible for maintaining the Earth’s temperature for life:

(a) Assortment    (b) Procurement

(c) Greenhouse effect (d) Detoxification

Ans. C

11. Greenhouse envelop surrounding the earth, which protects life on earth by absorbing ultraviolet solar radiation, warming the surface through heat retention (greenhouse effect), and reducing temperature extremes between day and night is known as:

(a) Grid      (b) Maven

(c) Flare     (d) Atmosphere

Ans. D

12. The height of the troposphere:

(a) 40–90 Km     (b) 0–16 Km

(c) 30–40 Km     (d) 16–30 Km

Ans. B

13. The numbers of vertical layers are found in the atmosphere. The layers are mainly determined by weather temperature increases or decreases with altitude:

(a) Four      (b) Five

(c) Seven         (d) Nine

Ans. A

14. Scattering is the process by which small particles suspended in a medium of a different index of refraction diffuse a portion of the incident radiation in all directions. Which one of the cloursahs the highest scattering capacity in the atmosphere?

(a) Green         (b) Violet

(c) Yellow        (d) Red

Ans. D

15. The layer which absorbs 97–99% of the sun’s high frequency ultraviolet light, which is potentially damaging to life on Earth? It is mainly located in the layer portion of the stratosphere from approximately 13 km to 40 km above the Earth’s surface:

(a) Neon     (b) Krypton

(c) Ozone        (d) Methane

Ans. C

16. The circulation of the atmosphere occurs due to:

(a) Thermal differences

(b) Gottfried Leilniz

(c) Inertial frame of reference

(d) Kinetic Energy

Ans. A

17. The force per unit area that is applied perpendicularly to a surface by the surrounding gas is known as:

(a) Potentially

(b) Kinetic

(c) Atmospheric pressure

(d) Entropy

Ans. C

18. Earth’s atmosphere has a mass about:

(a) 5 x 1098kg         (b) 7.9 x 1016kg

(c) 9 x 1010kg         (d) 5 x 1018kg

Ans. D

19. At the speed of kinetic energy is plus the gravitational potential energy of an object zero. It is commonly described as the speed needed to “break free” from a gravitational field:

(a) Conservative Forces

(b) Escape Velocity

(c) Gravitational slingshot

(d) Gravitational potential energy

Ans. B

20. In physics, an idealized object that absorbs all electromagnetic radiation falling on it is known as:

(a) Entropy      

(b) Isenthalpic process

(c) Thermodynamics

(d) Black Body

Ans. D

21. GovindSagar Bird Sanctuary, H. P. is famous for:

(a) Musk Dear, Jackal

(b) Elephant, Hippopotamus

(c) Tiger, Rhinoceros

(d) Teal, Ducks, Cranes

Ans. D

22. Similipal is:

(a) Zoo     

(b) Biosphere reserve

(c) National Parks

(d) Sanctuary

Ans. C

23. Bandipur National Park, Karnataka runs a project for:

(a) Wild Cats     (b) Tiger

(c) Deer      (d) Elephant

Ans. D

24. The concept of ‘Biosphere reserve’ was evolved by:

(a) WWF     (b) UNESCO

(c) Zoological Survey of India

(d) Government of India

Ans. B

25. The reserve in which the largest population of elephants is found in India:

(a) Manas        (b) Nilgiri

(c) Nanda Devi   (d) Dudhwa

Ans. A

Writer: Dr. R. S. Sengar, Director Training and Placement, Sardar VallabhBhai Patel University of Agreiculture and Technology, Modipuram, Meerut.