1. Maximum difference in the spacing of longitudes is :
Correct : B. at equator
2. Latitude of a point on the earth is measured by the distance in: [Asstt Grade 1990]
Correct : D. angles from the equator
3. Latitude and longitude both:
Correct : D. run perpendicular to each other
4. Which of the following pairs is not correctly matched? [NDA 1993]
Correct : D. 0° E or 0°W longitude – Equator
5. The latitude of a place is the same as the: [CDS 1991]
Correct : D. zenith distance of the full moon when on the meridian
6. Of the total volume of the earth, which layer forms the major part ?
Correct : D. Core
7. The equatorial circumference is greater than the polar circumference by
approximately:
Correct : B. 68 km
8. The distance of the equator from either of the poles is :
Correct : C. 10,002 km
9. On the 21st June, the day light is seen at the North Pole for:
Correct : D. 24 hrs.
10. The amount of insolation received at a place on the surface of the earth depends on:
Correct : D. Both (a)and (b)
11. If a place is located at 20°N, 80°E in which of the following continents does it lie? [CDS
1989]
Correct : B. Asia
12. Which of the following statements is correct ? 1. All meridians are of the same length 2. All latitudes are of the same length 3. The Prime Meridian is the longest meridian 4. The Equator is the longest latitude
Correct : D. 1 and 4
13. The longest circle which can be drawn on the earth's surface passes through: [Asstt
Grade 1993]
Correct : A. Equator
14. Japan is called ‘land of the rising sun’ because:
Correct : C. Japan being the Eastern most country in the World, it has the earliest sunrise
15. Which of the following phenomenon gives an evidence for the spherical shape of the
earth?
Correct : B. Revolution
16. The speed of rotation of the earth is: [IFS 1991]
Correct : D. 9.72 km/sec.
17. The point in the orbit of a moon that is farthest from the Earth and at which the moon's
velocity is at a minimum, the known as:
Correct : B. Apigee
18. Which of the following is not an effect produced by rotation of earth?
Correct : D. Poles have days and nights of 6 months duration
19. The revelations of a satellite photograph of the earth are as follows: 1. the Southern hemisphere bulges slightly more than the Northern hemisphere 2. it is slightly pear shaped ellipsoid of rotation 3. the polar axis of the earth is slightly shorter than the equatorial axis 4. the equatorial circumference is about 40,000km Which of the above statements are correct ?
Correct : D. 2, 3 and 4
20. Albedo is defined as:
Correct : D. the amount of insolation reflected back to the space by the top of atmosphere, by clouds and ice-covered areas of the Earth's surface
21. The Sun shines vertically on the equator:
Correct : C. twice a year
22. The position of the sun is annually twice overhead at Singapore because of the:
[Railways 1993]
Correct : D. parallelism of inclined axis of the earth
23. What is 'Siderial Day'?
Correct : C. The time during which the earth makes a complete rotation on its axis in respect of the fixed stars
24. The distance between the earth and the sun is smallest in the month of:
Correct : A. January
25. The earth revolves round the sun in its orbit by approximately:
Correct : A. 1° per day
26. There is a continual daylight or summer in the Arctic regions from:
Correct : C. 21st March to 23rd September
27. Antipodes are:
Correct : B. places diametrically opposite on earth's surface
28. Which of the following pairs of metals are supposed to constitute the internal core of
the earth?
Correct : D. Nickel and Iron
29. Consider a specific point on the surface of the earth (say Delhi). The temperature at a given time of day (say 12.00 Noon) will in general be higher in summer than in winter. This is because: [IAS 1993]
Correct : B. Sun-rays falling on the earth are inclined more towards the sun in winter
30. Who among the following was first to measure the circumference of the Earth? [NDA
2008]
Correct : A. Eratosthenes
31. Heat received by earth from the Sun is known as:
Correct : A. insolation
32. Lunar eclipse is caused when the: [Hotel Management 1991]
Correct : B. earth comes between the sun and the moon
33. Lunar eclipse does not occur every month because:
Correct : C. the moon's orbit is not all the time in the same plane as the earth
34. Lunar eclipse occurs on :
Correct : B. Full moon
35. The Solar eclipse achieves totality only in limited geographical regions because: [IAS 1993]
Correct : B. the size of the shadow of the Moon on the Earth is small compared to the cross-section of the Earth
36. Solar eclipse occurs when:
Correct : C. Moon comes between sun and earth
37. The position of a planet when it is nearest to the Sun, is called:
Correct : A. perihelion
38. The position of the earth in its orbit, when it is at its greatest distance from the Sun
causing summer in the Northern hemisphere is :
Correct : B. Aplheuon
39. The time of Cairo is 2 hours ahead of Greenwich time Cairo is situated at :
Correct : C. 30° East
40. When it is 8 P.M. in Tokyo, what is the time at Panama Canal which is located at 180°
W of it?
Correct : B. 8.00 A.M.
41. Through which one of the following groups of countries does the Equator pass? [IAS
2006]
Correct : B. Colombia, Kenya and Indonesia
42. Which one of the following is the time required for the Earth to return to a given point in its orbit with reference to fixed star, called? [NDA 2008]
Correct : D. Sideral year
43. In how many time zones has the world been divided into?
Correct : B. 24
44. Why does Russia have many local time differences?
Correct : C. Because of its long east-west stretches
45. Which one of the following elements is most abundant in the earth's crust? [NDA 2005]
Correct : A. Oxygen
46. Through which one of the following countries the Tropic of Cancer does not pass
through? [CDS 2005]
Correct : D. Nepal
47. All the watches of a country are set according to :
Correct : B. standard time of the country
48. If it is 4 P.M. on Monday at 150°W, what will be the time at 150°E ?
Correct : D. 12 Noon on Tuesday
49. When it is 12.00 noon at Delhi (77° 10'E), people at another place on earth take their 6
o'clock morning tea. The longitude of that place is: [CDS 2001]
Correct : B. 12°50' W
50. When it is 12:00 noon in India, the time in San Francisco (USA) would be closed to :
[CDS 2002]
Correct : D. 8 : 30 p. m. of previous day
51. Consider the following statements: While it is 6.30 AM (Sunday) in London, it is around 1. 2.30 AM (Sunday) in Honolulu (Hawaii) 2. 8.30 PM (Saturday) in Honolulu (Hawaii) 3. 3.30 PM (Sunday) in Tokyo 4. 1.30 AM (Sunday) in Tokyo Which of these statements is/are correct? [Asstt Comm PF 2002]
Correct : B. 2 and 3
52. Beirut time is two hours ahead and Lima time is five hours behind GMT. The longitudes
of Beirut and Lima are respectively: [CPO SI 2002]
Correct : C. 30° East and 75° West
53. When the clock strikes 12:00 noon at Greenwich, it strikes 5:30 p.m. at place X on the
same day. What is the meridian of longitude of place X ? [NDA 2003]
Correct : C. 82°30' E
54. When it is nine o'clock in London, it will be the same time in :
Correct : A. Ghana
55. The location of a place A is at 60° E longitude and 30° S latitude while the location of B
is at 60° E longitude and 45° N latitude. Time at B will be :
Correct : D. the same as that of A
56. The International Dateline deflects to a side to avoid:
Correct : C. Aleutian Islands
57. Which of the following is/are true of world time zones? 1. The world is divided into thirty time zones 2. All time zones of the world are described in term of the number of hours difference between the standard meridian of that zone and the Greenwich Meridian 3. All countries have more than one time zone 4. The time for all places east of Greenwich is designated slow, and time for all places left of Greenwich is designated fast
Correct : D. II only
58. A person sets off from Alaska on a Tuesday and reaches New Zealand the next day
which will be :
Correct : C. Thursday
59. The local time at A is 4 p.m, when Greenwich Mean Time is 2 p.m. This indicates: 1. A is east of Greenwich 2. the longitude of A is 30°
Correct : D. Both I and II
60. If the earth's direction of rotation is reversed, what would be the IST when it is noon at
the International Date Line? [IAS 1997]
Correct : C. 18.30 hrs
61. Sea tides show variations because of:
Correct : D. different phases of the moon
62. One day in Mumbai a tide occurs at 8.00 A.M. The next day it will occur at :
Correct : B. 8.26 A.M.
63. Which one of the following is the correct sequence of the given Continents in the decreasing order of their percentage of Earth's land? [IAS 2005]
Correct : B. Africa – North America – South America – Europe
64. Which one of the following has geographical position of 0 degree latitude and 0 degree
longitude? [CDS 2008]
Correct : A. In the South Atlantic Ocean
65. The Earth is an oblate spheroid and not a perfect sphere. This is because [CDS 2010] 1. the Earth has a rotational motion and the rotational speed increases as one goes from the Poles towards the Equator. 2. the Equator experiences greater gravitational pull from the Sun. 3. the intensity of sunlight received at the Equator is greater than that at the Poles.
Correct : B. 1 and 2
66. The antipodal position of a place located at 35° south and 80° west is [Asstt Commdt
2010]
Correct : B. 35° north and 100° east
67. If news is broadcast from London at 10:30 AM, at what time it will be heard at
Baghdad (45°E)? [CDS 2012]
Correct : C. 1:30 PM
68. The distance between two consecutive longitudes (91° E and 92° E) at the Poles is
[CDS 2012]
Correct : A. 0 km
69. Consider the following statements:
1. Coriolis effect is zero at the Equator.
2. Coriolis effect is more towards the Poles.
3. Coriolis effects are related to the decreasing rotational velocity with increasing latitudes.
4. Coriolis effects are related to the increasing rotational velocity with increasing latitudes.
Which of the statements given above are correct? [CDS 2012]
Correct : C. 1, 2 and 4
70. How many kilometres are represented by 1° of latitude? [CDS 2011]
Correct : C. 111 km
71. The approximate circumference of the Earth is [CPO SI 2011]
Correct : D. 30,000 km
72. Consider the following statements: 1. The tropical year is shorter than the sidereal year. 2. The solar day is longer than the sidereal day. Which of the statements given above is/are correct? [NDA 2010]
Correct : C. Both 1 and 2
73. The seasonal contrasts are maximum in:
Correct : B. mid-latitudes
74. Which of the following is the best definition of 'Tides' ? [SBI PO 1991]
Correct : C. A periodic rise and fall of sea water caused by the gravitational force of moon and sun on earth
75. Which of the following statements regarding the earth's axis are true? 1. It makes an angle of with the plane of ecliptic 2. It maintains a flexible orientation with respect to the stars 3. It is the most important fact connected with Earth-Sun relationship
Correct : C. 1 and 3
76. The heavier silicates named 'Sima’ or silica + magnesium are most abundant in the:
Correct : A. crust
77. Insolation heats up the land masses more quickly than the water bodies because:
Correct : C. water needs more energy to get warm
78. The earth's annual circuit round the sun covers a distance of:
Correct : C. 966 million kms
79. It is six months long day in the northern polar region and six months long night in the southern polar region because: [Railways 1993]
Correct : B. earth is inclined towards its orbital plane
80. The surface of Earth that lies between the Tropic of Cancer and the Tropic of Capricorn is called:
Correct : D. Torrid Zone
81. Which of the following are true regarding equinoxes? [CDS 1993] 1. They occur on March 21 st and September 23rd 2. They depict equal days and equal. nights on March 21 st and September 23rd on all places of the earth 3. All places on the earth have equal temperature during equinoxes
Correct : A. 1 and 2 only
82. Choose the incorrect statement; [IFS 1993]
Correct : C. The Sun's rays are vertical at all places on the days of the equinoxes
83. The largest amount of reflection of the solar radiant energy which is reflected back into space before reaching the earth's surface is due to:
Correct : A. clouds
84. What percentage of insolation is received by the earth's surface?
Correct : A. 47%
85. The incoming short-wave solar radiation is balanced by an equal amount of long-wave radiation from earth going back to space. This is known as:
Correct : C. heat balance of earth
86. The latitude of a place expresses its angular position relative to the plane of
Correct : B. equator
87. At 12 noon of December 21, you observe that you cast no shadow as you stand in bright
sunlight. So you must be, somewhere near:
Correct : C. the Tropic of Capricorn
88. The Gutenberg discontinuity is between:
Correct : C. the outer core and the lower mantle
89. If the earth's axis had not been inclined: 1. temperature distribution would have been uniform 2. days and nights would not have occurred 3. seasons would not· have occurred 4. poles would not have continuous day
Correct : C. III and IV
90. The Tropic of Cancer does NOT pass through: [NDA 2003]
Correct : D. Yemen
91. Which one of the following minerals occurs abundantly in the Earth's crust? [CDS
2003]
Correct : B. Silica
92. The axis of rotation of earth is tilted by 23.5° to the plane of revolution around the sun. The latitude of Mumbai is less than 23.5° whereas the latitude of Delhi is more than 23.5°. Which one of the following statements in this regard is correct? [CDS 2000]
Correct : C. At Mumbai the sun can come overhead, but it will never do so at Delhi
93. Consider the following statements: 1. Prime Meridian passes through Greenwich and is at 0° Longitude. 2. International Date Line, on the map appears as a straight line along 180° Longitude. 3. While crossing International Date Line from east to west, one gains a day. 4. Tropic of Cancer lies at Latitude. Which of these statements are correct? [Asstt Comm PF 2002]
Correct : D. 1 and 4
94. Why are winters more severe in Southern Hemisphere than in the Northern Hemisphere?
Correct : C. Because of more iceberg activity in Southern Hemisphere
95. The tide at its maximum height is known as:
Correct : C. Spring tide
96. ‘Green House Effect’ means:
Correct : C. trapping of solar energy due to atmospheric carbon dioxide
97. The International Date Line passes through: [LlC, AAO 1994]
Correct : A. Bering strait
98. The International Date Line makes slight deviation from 180° meridian so that it : [I.
Tax & Central Excise 1990]
Correct : C. does not divide a group of islands under the same administration
99. When a ship crosses Date line from west to east: [Railways 1991]
Correct : B. it gains one day
100. Which of the following statements regarding the International Date line are correct? (1) It is a longitude of 180° (2) It is determined by 180° longitude but is not a straight line (3) It is a Greenwich meridian helping in fixing time and date (4) It solves the problem of time and date among the World's nations