1. If there are four places on the same meridian 500km apart and the local time at one place is 12.00 noon, what will be the time at the three other places? [NDA 2008]
Correct : A. 12.00noon
2. Which of the following statements is/are correct? 1. A crossing of the International Date Line entails repeating one day when travelling westwards 2. A crossing of the International Date Line entails repeating one day when travelling eastwards 3. International Date Line is an internationally agreed line drawn parallel to the 180° meridian 4. International Date Line divides the Pacific Ocean into two equal parts. Select the correct answer using the codes given below: [CDS 1994]
Correct : B. 2, 3 and 4
3. Which of the following are true regarding the Prime meridian? 1. It passes through the centre of a certain country 2. It passes through the centre of the Globe 3. It passes through the observatory at Greenwich, near London.
Correct : C. 1, 2 and 3
4. Which of the following .countries are located on the Greenwich Meridian? 1. Algeria 2. Germany 3. Guinea 4. Iceland
Correct : B. 2 only
5. If the difference in time between, two places were 2 hours and 20 minutes, then the
difference in their longitudes would be: [IAS 1990]
Correct : B. 35°
6. The Earth turns through 360° in 24 hours. Each 15° longitude represents:
Correct : C. One hour
7. On Monday, the 14th June, a man crosses the International Date Line at 5 p.m. from the Asian side to the American side. Which of the following will he now assume to be the correct date and time?
Correct : D. 5 p.m. of Sunday, the 13th June
8. When it is noon along 82° 30' longitude, along what degree of longitude it will be 6.30
a.m.? [IAS 1994]
Correct : C. 0° E or W
9. A radio broadcast from Delhi on Monday at 7.30 p.m. is heard at New York on: [NDA 1994]
Correct : C. the same day at 7:30 a.m.
10. If a traveller going from Vancouver to Tokyo crosses the International Date Line on Saturday, what will be the day for him at Tokyo?
Correct : C. Sunday
11. A one-day Cricket match between India and England starts at 10.00 A.M. in London.
The direct telecast of the match will begin in India at: [IFS 1993, CDS 1992]
Correct : C. 3.30 P.M.
12. An aeroplane takes off from 30° N latitude, 50° E longitude and lands at the opposite end of the earth. Where does it land? [IAS 1994]
Correct : D. 30° N Lat., 130°W long
13. When it is 12 noon at Greenwich, what is the time at New York (74° W) ? [NDA 1992]
Correct : D. 7.04 a.m.
14. Any type of rainfall has the following aspects:
Correct : C. ascent of air leading to cooling and condensation
15. Convectional rainfall is highly localized and is associated with minimum cloudiness.
Which of the statements given above is/are correct?
Correct : A. 1 only
16. Which of the following places are favourably influenced by the Trade winds? 1. West Indies 2. Brazil 3. Mexico 4. Medagascar
Correct : B. I, II, III and IV
17. Which of the following are true regarding ionosphere? 1. It is the uppermost layer of atmosphere 2. The molecules and atoms of nitrogen and oxygen in this layer absorb a part of solar radiation and become ionized 3. This layer is responsible for reflecting back the radio wave~ transmitted from the earth
Correct : C. II and III
18. The type of rainfall shown in figure is:
Correct : B. convectional
19. Which of the following is the annual precipitation of an area?
Correct : A. All forms of precipitation converted to the quantity of liquid water
20. Fogs formed along, the sea-coast are due to:
Correct : A. advection
21. Which of the following is produced by the rapid ascent of moist air?
Correct : C. Hail
22. In the atmosphere of the primitive earth there was no :
Correct : A. oxygen
23. The January isotherm taken as a basis for dividing India into tropical and subtropical zones is : [IAS 1997]
Correct : B. 18° C
24. A temperature inversion is most likely to occur under which of the following conditions?
[IAS 2004]
Correct : D. Calm, clear and cool winter night
25. Which of the following are the ideal conditions for the phenomenon of temperature
inversion to occur? [IAS 2001] 1. Long nights 2. Cloudy sky 3. Calm and stable air 4. Dry air
Correct : D. I, III and IV
26. Agents of fog formation do not include:
Correct : B. diurnal temperatures of short ranges
27. Which one of the following is the cloud that is dark-grey or black, found at very low height and brings the real rain? [CDS 2004]
Correct : D. Nimbostratus
28. Which one of the following statements is correct? [IAS 2004]
Correct : A. Cirrus clouds are composed of ice crystals
29. The cauliflower shape is associated with which of the following cloud formations?
Correct : B. Cumulus
30. Winds and air currents differ in the aspect that:
Correct : D. winds are horizontal movements of air while air currents are the vertical movements of air
31. In USA, which one of the following regions Receives heavy rainfall throughout the year
under the influence of Wester lies? [IAS 2009]
Correct : A. North-western
32. The cold and dense air blowing down the mountain slope during the night is known as:
Correct : C. katabatic wind
33. When the wind is deflected due to the rotation of the Earth, it is called as: [NDA 1994]
Correct : A. geostropic wind
34. Which of the following statements is incorrect?
Correct : B. Monsoons are local seasonal winds
35. Temperate cyclones bring along with them:
Correct : D. mild rainfall
36. Winds blow:
Correct : B. from a region of high pressure to a region of low pressure
37. Doldrums are belts of low atmospheric pressure obtained in the regions adjoining the
equator to a distance of :
Correct : C. 5 degree latitude towards north and south
38. The chemically inactive gas present in the atmosphere is :
Correct : B. argon
39. Doldrums are: [NDA 1995]
Correct : B. equatorial zone with low pressure
40. With reference to the sub-tropical high pressure belt, consider the following
statements: 1. It is affected by Earth's rotation and descent of winds from higher altitudes. 2. It is dynamically induced and characterized with anti-cyclonic conditions. Which of the statement(s) given above is/are correct? [IAS 2009]
Correct : C. 2 only
41. Atmospheric pressure exerted on earth is due to:
Correct : A. Gravitational pull of the earth
42. The Sea breeze blows during: [Senior Observer's Exam 1991]
Correct : B. day from sea to land
43. The instrument used for finding out wind-direction is :
Correct : B. wind vane
44. ‘Beaufort Scale’ is used to measure:
Correct : B. wind velocity
45. Lapse rate is related to the decrease of : [IFS 1998]
Correct : C. temperature at 1°F for an ascent of 330 feet
46. Which of the following constituents of the atmosphere are important from the climatic
point of view ? [IFS 1993] 1. Nitrogen 2. Oxygen 3. Carbon dioxide
Correct : D. only 3
47. The Trade winds are caused by:
Correct : C. inflowing movement of air along the earth's surface towards the equator
48. What is the correct sequence of the following zonal pressure belts? 1. Subpolar low 2. Equatorial low 3. Polar high 4. Subtropical high Select the correct answer using the codes given below:
Correct : C. 2, 4, 1, 3
49. Which one of the following statements is correct? [IAS 2004]
Correct : D. All the above three are correct in respect of jet streams
50. Arrange the following gases of the atmosphere in increasing order by volume: 1. Nitrogen 2. Oxygen 3. Carbon dioxide 4. Argon
Correct : C. III, IV, II, I
51. Land masses are heated and cooled much faster than water bodies. Identify the true
statements in this regard: 1. Land gets heated by conduction 2. Water has higher specific heat 3. Only the surface layers of water are heated 4. Water gets heated by convection
Correct : D. I, II and IV
52. When can one record the lowest temperature of air?
Correct : A. Just before sunrise
53. What helps to maintain the heat budget on the surface of the earth?
Correct : A. Incoming insolation in short waves and terrestrial radiation in long waves
54. The water content in the atmosphere:
Correct : C. decreases as temperature increases
55. An upper air wind system with very high velocities in certain parts of the atmosphere is called:
Correct : C. jet stream
56. Which one of the following conditions is NOT necessary for precipitation to occur?
[NDA 2002]
Correct : A. The air must be warm
57. Very strong and cold icy winds that blow in the Polar regions are called: [CPO SI 2003]
Correct : C. blizzards
58. The plane of contact of the troposphere and stratosphere is known as :
Correct : D. tropopause
59. The velocity of winds is related to :
Correct : C. pressure gradient in the direction of their flow
60. Increase in carbon dioxide in atmosphere causes: [Railways 1994]
Correct : A. rise in earth temperature
61. In the Southern hemisphere the Westerlies blow from :
Correct : C. north west
62. Which of the following sequences of atmospheric layers is correct from below?
Correct : C. Troposphere, Tropopause, Stratosphere, Ionosphere
63. The layer of the atmosphere which provides ideal conditions for flying on et aeroplanes is :
Correct : B. stratosphere
64. Cyclone is a system of wind blowing: [CBI 1991]
Correct : B. spirally towards low pressure region
65. Consider the following statements regarding general characteristics associated with tropical cyclones 1. Tropical cyclones move with very low velocity over the oceans but become strong while moving over the land areas. 2. They are confined to a particular period of the year (mainly summer) and normally move from east to west. Which of the statement(s) given above is/are correct? [IAS 2009]
Correct : B. 2 only
66. Which one of the following constituents of the atmosphere causes greatest changes in climate and weather? [NDA 1995]
Correct : D. Water Vapour
67. Consider the following statements with reference to tornadoes: 1. Tornadoes are smaller and more intense than hurricanes. 2. Tornadoes are most abundant along the eastern coast of India. 3. The average tornado lasts for less than one hour. 4. Tornadoes are most common in the afternoons in the early summer. Which of these statements are correct? [CDS 2002]
Correct : A. 1, 3 and 4
68. The hot dry local winds that blow on the eastern side of the Alps Mountain are known
as: [NDA 2003]
Correct : B. Foehn
69. Which one of the following characteristics is NOT associated with the tropical cyclones? [NDA 2002]
Correct : D. Calm conditions return when the eye of the cyclone arrives
70. Which of the following is/are wrongly matched? 1. Typhoon : China Sea 2. Tornado : Mid-Western United States 3. Hurricane : West Indies 4. Willy-Willies : Canada
Correct : D. 4 only
71. The clouds extending from one side of horizon to other as 3 dark grey sheet having
uniform base are called: [IAS 2004]
Correct : A. Stratus clouds
72. Because of which one of the following factors, clouds do not precipitate in deserts?
[CDS 2009]
Correct : B. Low humidity
73. 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? [IAS 2008]
Correct : A. 1only
74. The albedo of which one among the following is the highest? [IAS 2008]
Correct : A. Cirrus cloud
75. Of the solar energy coming into the Biosphere, what percentage of it is actually used in the photosynthesis? [IAS 2008]
Correct : D. More than 2%
76. Which of the following statements characterize the anticyclones? 1. Anticyclones are low pressure systems. 2. They are characterized by divergent wind circulation. 3. They are indicative of dry weather conditions. Select the correct answer using the codes given below: [NDA 2008]
Correct : A. 2 and 3
77. Evening sun is not a shot as the mid-day sun. What is the reason? [NDA 2008]
Correct : D. In the evening, radiations travel larger distance through atmosphere
78. Mist is a result of which one of the following? [CDS 2008]
Correct : A. Condensation
79. Consider the following statements: 1. Either of the two belts over the oceans at about 30°to 35°Nand S Latitudes is known as Horse Latitude. 2. Horse latitudes are low pressure belts. Which of the statements given above is/are correct? [IAS 2007]
Correct : A. 1 only
80. Consider the following statements: 1. The annual range of temperature is greater in the Pacific Ocean than that in the Atlantic Ocean. 2. The annual range of temperature is greater in the Northern Hemisphere than that in the Southern Hemisphere. Which of the statements given above is/are correct? [IAS 2007]
Correct : B. 2 only
81. Consider the following statements: 1. In the tropical rainforest of Brazil, the average diurnal range of temperature is much greater than the average annual range of temperature. 2. In the humid subtropical climate of Kyushu island of Japan, the rainfall for the year almost totals that of the rainfall in tropical rainforest. Which of the statements given above is/are correct? [IAS 2007]
Correct : C. Both 1 and 2
82. Consider the following statements: 1. The variation in average annual range of temperature at1 5° latitude of Southern Hemisphere is much less than that at 15° latitude of Northern Hemisphere. 2. At latitudes pole ward 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? [IAS 2007]
Correct : A. 1 only
83. Which one or the following climates is found in coastal areas of Californian North America, Central Chile in South America and South-West tip of West Australia? [IAS 2007]
Correct : B. Mediterranean
84. 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? [IAS 2007]
Correct : C. 1 and 3 only
85. Northern part of Australia is typified by which one of the following? [IAS 2007]
Correct : D. Monsoon climate
86. When a descending air contracts and its volume decreases, what happens to its temperature? [IAS 2009]
Correct : B. Its temperature increases
87. Condensation is a process which occurs when [IAS 2009]
Correct : D. relative humidity becomes 100% and more
88. Which of the following sequences of clouds in ascending order would one meet 500 metres and above the mean sea level? [IAS 2009]
Correct : A. Stratus, Nimbus, Cirrostratus, Cirrus
89. Consider the following statements regarding the distribution and pattern of isotherms 1. In the northern hemisphere, isotherms bend sharply equator-ward over the continents during winter. 2. Temperature gradients are greater in summer than in winter in the northern hemisphere. Which of the statement(s) given above is/are correct? [IAS 2009]
Correct : A. 1 only
90. With reference to convectional type of rainfall, consider the following statements 1. It is a warm weather phenomenon. 2. This rainfall is associated with cumulo-nimbus clouds. Which of the statement(s) given above is/are correct? [IAS 2009]
Correct : C. Both 1 and 2
91. A devastating Cloud Burst swept over Leh on August 2010. Which one of the following statements with regard to Cloud Burst is not correct? [CDS 2011]
Correct : C. Cloud Burst occurs only in hilly areas
92. What is the major role of a greenhouse gas that contributes to temperature rise of the Earth's surface? [CDS 2012]
Correct : D. Lets incoming sunlight' pass through but stops outgoing infrared radiation
93. Logically, what does a continually rising air pressure indicate? [CDS 2012]
Correct : A. Advent of unsettled and cloudy weather
94. What is a cloudburst? [CDS 2012]
Correct : A. It refers to sudden and copious rainfall over a small area which often lasts for only a few minutes
95. Rain shadow effect is associated with [NDA 2011]
Correct : B. Orographic rainfall
96. The intensity of insolation depends on [NDA 2011]
Correct : D. Latitude
97. Which of the following statements is/are correct? 1. Cyclone is a low pressure system. 2. The wind movement is clockwise in the cyclone of northern hemisphere. Select the correct answer using the code given below: [NDA 2011]
Correct : C. Both 1 and 2
98. The phenomenon of 'trade winds' takes place due to [NDA 2011]
Correct : B. convection of heat
99. Doldrums is a [NDA 2011]
Correct : D. Tropical no-wind belt
100. Which one among the following statements relating to an anticyclone is correct? [NDA 2011]
Correct : A. Anticyclone is a wind system with a high pressure centre