MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 155 Mcqs, each offering curated multiple-choice questions to sharpen your Environmental Science knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
By international convention, which line marks the outermost boundary of the Earth’s atmosphere? |
| A. | Space line |
| B. | Boundary line |
| C. | Karman line |
| D. | Astronaut line |
| Answer» D. Astronaut line | |
| 2. |
Turbopause is highest layer of the homosphere. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Which of the following mentioned layers is NOT a homosphere? |
| A. | Exosphere |
| B. | Troposphere |
| C. | Ionosphere |
| D. | Mesosphere |
| Answer» B. Troposphere | |
| 4. |
Which layer of the atmosphere is responsible for aurora formation? |
| A. | Ozone layer |
| B. | Stratosphere |
| C. | Exosphere |
| D. | Ionosphere |
| Answer» E. | |
| 5. |
Which of the following indicates the correct order of the principal layers of the earth’s atmosphere from top to bottom? |
| A. | Troposphere – Stratosphere – Mesosphere – Thermosphere – Exosphere |
| B. | Thermosphere – Stratosphere – Troposphere – Mesosphere – Exosphere |
| C. | Exosphere – Thermosphere – Mesosphere – Stratosphere – Troposphere |
| D. | Exosphere – Mesosphere – Thermosphere – Stratosphere – Troposphere |
| Answer» D. Exosphere – Mesosphere – Thermosphere – Stratosphere – Troposphere | |
| 6. |
The temperature decreases with altitude in the stratosphere layer. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
“Roaring forties” is the term used to describe which of the following winds? |
| A. | East-to-west air winds in the southern hemisphere |
| B. | West-to east air winds in the northern hemisphere |
| C. | East-to-west air winds in the northern hemisphere |
| D. | West-to-east air winds in the southern hemisphere |
| Answer» E. | |
| 8. |
What is the region of mild and irregular wind in the equatorial region known as? |
| A. | Trade winds |
| B. | Westerlies |
| C. | Doldrums |
| D. | Easterlies |
| Answer» D. Easterlies | |
| 9. |
In the lower layers of atmosphere, what range of wavelengths of light is predominant? |
| A. | Less than 100 nm |
| B. | Greater than 300 nm |
| C. | Between 100-300 nm |
| D. | All wavelengths are equally present |
| Answer» C. Between 100-300 nm | |
| 10. |
Which is the lowest layer of Atmosphere? |
| A. | roposphere |
| B. | tratosphere |
| C. | esosphere |
| D. | xosphere |
| Answer» B. tratosphere | |
| 11. |
Freely moving bodies are ________ |
| A. | eflected to their right in the northern hemisphere |
| B. | eflected to the right in the southern hemisphere |
| C. | eflected upwards at the equator |
| D. | naffected by the earth's movements |
| Answer» B. eflected to the right in the southern hemisphere | |
| 12. |
The zone of Earth's atmosphere immediately above its surface up to a height of about 16kms above equator and 8kms over the poles is known as |
| A. | esosphere |
| B. | hermosphere |
| C. | roposphere |
| D. | tratosphere |
| Answer» D. tratosphere | |
| 13. |
Consider the following statements:1. Nearly 99 percent of the total mass of the atmosphere lies within 30 km of the Earth's surface.2. The proportion of ozone in the atmosphere increases to a maximum at about 60 km from Earth's surface.Which of the statements given above is/are correct? |
| A. | only |
| B. | only |
| C. | oth 1 and 2 |
| D. | either 1 nor 2 |
| Answer» B. only | |
| 14. |
Which of the following depletion results in the increase in the UV radiation on the Earth? |
| A. | arbon monoxide |
| B. | arbon dioxide |
| C. | zone |
| D. | xygen |
| Answer» D. xygen | |
| 15. |
Beaufort Scale is used to measure ________ |
| A. | ir pressure |
| B. | ind velocity |
| C. | ind direction |
| D. | umidity |
| Answer» C. ind direction | |
| 16. |
Cloud burst means ________ |
| A. | bnormally heavy downpour of rain, associated with a thunderstorm |
| B. | ormation of artificial rain |
| C. | resence of scattered flakes of cloud in the sky |
| D. | owing of seeds of a crop in a cloudy weather |
| Answer» B. ormation of artificial rain | |
| 17. |
In the atmosphere of the primitive earth there was no ________ |
| A. | xygen |
| B. | arbon dioxide |
| C. | itrogen |
| D. | mmonia |
| Answer» B. arbon dioxide | |
| 18. |
Which one of the following characteristics is not associated with the tropical cyclones? |
| A. | efore the cyclone arrives the air becomes very still and temperature and humidity are high |
| B. | s the front of the vertex arrives, gusty winds develop and thick clouds appear |
| C. | s the cold front passes, the weather changes very rapidly |
| D. | alm conditions return when the eye of the cyclone arrives |
| Answer» E. | |
| 19. |
Which one among the following local winds is not characteristically hot and dry? |
| A. | irocco |
| B. | istral |
| C. | hamsin |
| D. | hinook |
| Answer» C. hamsin | |
| 20. |
The layer of the atmosphere which provides ideal conditions for flying on jet aeroplanes is ________ |
| A. | roposphere |
| B. | tratosphere |
| C. | onosphere |
| D. | xosphere |
| Answer» C. onosphere | |
| 21. |
The final boundary between the Earth and the outer space is called |
| A. | agnetosphere |
| B. | onosphere |
| C. | esopause |
| D. | agnetopause |
| Answer» E. | |
| 22. |
A temperature inversion is most likely to occur under which of the following conditions? |
| A. | ountain top in late evening |
| B. | indy but cloudy night |
| C. | alm, cloudy and humid night |
| D. | alm, clear and cool winter night |
| Answer» E. | |
| 23. |
Which of the following statements about Stratosphere is incorrect? |
| A. | t is the region in the atmosphere above tropopause |
| B. | t contains ozone layer which prevents ultraviolet radiations of sun from reaching to the earth |
| C. | t is not free from the violent weather changes occurring on the earth |
| D. | t provides ideal flying conditions |
| Answer» D. t provides ideal flying conditions | |
| 24. |
Relative humidity of the atmosphere is directly affected by ________ |
| A. | hange in atmospheric pressure |
| B. | hange in atmospheric temperature |
| C. | hange in the direction of winds |
| D. | one of these |
| Answer» C. hange in the direction of winds | |
| 25. |
Which gas is found in maximum quantity in lower atmosphere? |
| A. | ydrogen |
| B. | arbon dioxide |
| C. | xygen |
| D. | itrogen |
| Answer» E. | |
| 26. |
An important gas in the atmosphere that absorbs sun's ultraviolet rays is |
| A. | xygen |
| B. | itrogen |
| C. | zone |
| D. | ydrogen |
| Answer» D. ydrogen | |
| 27. |
The heat from Sun to Earth is called as |
| A. | emperature Radiation |
| B. | nsolation |
| C. | mitted Heat |
| D. | olar Radiation |
| Answer» E. | |
| 28. |
Which of the following are the ideal conditions for the phenomenon of temperature inversion to occur? I. Long nightsII. Cloudy skyIII. Calm and stable airIV. Dry air |
| A. | and II |
| B. | , II and III |
| C. | I, III and IV |
| D. | , III and IV |
| Answer» E. | |
| 29. |
Which one of the following climates is found in coastal areas of Californian North America, Central Chile in South America and South-West tip of West Australia? |
| A. | ropical savanna |
| B. | editerranean |
| C. | umid Continental |
| D. | ow-latitude steppe |
| Answer» C. umid Continental | |
| 30. |
Which one of the following constituents of the atmosphere causes greatest changes in climate and weather? |
| A. | itrogen |
| B. | xygen |
| C. | zone |
| D. | ater Vapour |
| Answer» E. | |
| 31. |
The Trade winds are caused by ________ |
| A. | otation of the earth |
| B. | evolution of the earth |
| C. | nflowing movement of air along the earth's surface towards the equator |
| D. | one of these |
| Answer» D. one of these | |
| 32. |
Anticyclones are caused by ________ |
| A. | iolent winds |
| B. | eavy rainfall |
| C. | inds that blow spirally outwards from the centre |
| D. | inds that blow spirally inwards |
| Answer» D. inds that blow spirally inwards | |
| 33. |
Choose the incorrect statement ________ |
| A. | apacity of air to hold moisture decreases with a rise in temperature of the air |
| B. | he air pressure decreases with an increase in temperature |
| C. | bsolute humidity is expressed in grams per cubic metre of air |
| D. | ith an ascent of every 165 metres, the temperature is reduced by 1°C |
| Answer» D. ith an ascent of every 165 metres, the temperature is reduced by 1°C | |
| 34. |
In the Southern hemisphere the Westerlies blow from ________ |
| A. | orth |
| B. | orth east |
| C. | orth west |
| D. | outh east |
| Answer» D. outh east | |
| 35. |
The term used for the zone at low pressure and light and variable winds in the oceanic equatorial regions is ________ |
| A. | epression |
| B. | oldrums |
| C. | orse-latitudes |
| D. | nter-tropical convergence |
| Answer» B. oldrums | |
| 36. |
The Sea breeze blows during ________ |
| A. | ay from land to sea |
| B. | ay from sea to land |
| C. | ight from land to sea |
| D. | ight from sea to land |
| Answer» C. ight from land to sea | |
| 37. |
Which of the following constituents of the atmosphere are important from the climatic point of view ? 1. Nitrogen2. Oxygen3. Carbon dioxide |
| A. | and 2 |
| B. | and 3 |
| C. | , 2 and 3 |
| D. | nly 3 |
| Answer» E. | |
| 38. |
What is the name of the layer closest to the Earth? |
| A. | onosphere |
| B. | tratosphere |
| C. | roposphere |
| D. | xosphere |
| Answer» D. xosphere | |
| 39. |
Consider the following statements:1. A hurricane acquires its spin from the Coriolis effect.2. The diameter of the hurricane decreases as it moves away from low latitudes.3. The diameter of a hurricane is never below 150 km.Which of the statements given above is/are correct? |
| A. | only |
| B. | and 3 only |
| C. | and 3 only |
| D. | , 2 and 3 |
| Answer» D. , 2 and 3 | |
| 40. |
Winds blow ________ |
| A. | n regions of low pressure |
| B. | rom a region of high pressure to a region of low pressure |
| C. | rom a region of low pressure to a region of high pressure |
| D. | n regions of high pressure |
| Answer» C. rom a region of low pressure to a region of high pressure | |
| 41. |
Fogs formed along, the sea-coast are due to ________ |
| A. | dvection |
| B. | adiaton |
| C. | onvection |
| D. | onduction |
| Answer» B. adiaton | |
| 42. |
Which of the following are true with regard to temperature control of the atmosphere of a given place?I. The major temperature contrasts on earth's surface are between land masses and oceansII. During night, the water surface cools more rapidly than the land surfaceIII. Temperature generally decreases with latitude on either side of the equatorIV. Temperature rises to a maximum during summer and falls to a minimum during winter |
| A. | , III and IV |
| B. | I, III and IV |
| C. | and II |
| D. | I and IV |
| Answer» B. I, III and IV | |
| 43. |
Consider the following statements:1. The variation in an average annual range of temperature at 15° latitude of Southern Hemisphere is much less than that at 15° latitude of Northern Hemisphere.2. At latitudes poleward of 35° the incoming radiation exceeds the outgoing radiation in. Northern Hemisphere, whereas in Southern Hemisphere the outgoing radiation exceeds the incoming radiation.Which of the statements given above is/are correct? |
| A. | only |
| B. | only |
| C. | oth 1 and 2 |
| D. | either 1 nor 2 |
| Answer» B. only | |
| 44. |
Consider the following statements:1. The monsoon climate is found in Northern Australia.2. The China type climate is found in Argentina.Which of the statements given above is/are correct? |
| A. | only |
| B. | only |
| C. | oth 1 and 2 |
| D. | either 1 nor 2 |
| Answer» C. oth 1 and 2 | |
| 45. |
Which of the following winds is incorrectly paired with the area in which it prevails? |
| A. | erg wind - South eastern Africa |
| B. | araburan - Tarim basin of Sinkiang |
| C. | outherly Burster - New South Wales |
| D. | urricanes - New Zealand |
| Answer» E. | |
| 46. |
Local thunderstorms 'Nor westers' are prominent in ________ |
| A. | unjab |
| B. | est Bengal |
| C. | ndhra Pradesh |
| D. | amil Nadu |
| Answer» C. ndhra Pradesh | |
| 47. |
Wind in the Southern hemisphere is deflected towards left due to ________ |
| A. | emperature variations |
| B. | otation of the earth |
| C. | ifference in pressure |
| D. | ifference in water content |
| Answer» C. ifference in pressure | |
| 48. |
Arrange the following gases of the atmosphere in increasing order by volume:I. NitrogenII. OxygenIII. Carbon dioxideIV. Argon |
| A. | , II, III, IV |
| B. | , II, IV, III |
| C. | II, IV, II, I |
| D. | V, III, II, I |
| Answer» D. V, III, II, I | |
| 49. |
Which of the following are true regarding ionosphere?I. It is the uppermost layer of atmosphereII. The molecules and atoms of nitrogen and oxygen in this layer absorb a part of solar radiation and become ionizedIII. This layer is responsible for reflecting back the radio wave transmitted from the earth |
| A. | and II |
| B. | and II |
| C. | I and III |
| D. | , II and III |
| Answer» D. , II and III | |
| 50. |
Which one of the following is not a correct example of tropical cyclone? |
| A. | ornadoes |
| B. | yphoons |
| C. | urricanes |
| D. | or westers |
| Answer» E. | |