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UPSC > World Geography

Explore popular questions from World Geography for UPSC. This collection covers World Geography previous year UPSC questions hand picked by experienced teachers.

Q 1.

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A meteor is :

A

a rapidly moving star

a piece of matter which has entered the earth's atmosphere from outer space

C

part of a constellation

D

a comet without a tail

Explanation

Meteor is a small celestial body which has entered the earth's atmosphere by the gravitational force of earth, when they pass close to it. Meteors typically occurs in the mesosphere, and most range in altitude from 75 km to 100 km.

Q 2.

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The graph given below shows the mean average monthly temperatures (in °C) and mean monthly rainfall (in cms) of a place:

This graph is indicative of which one of the climatic zones of the world?

Wet and dry tropical

B

Rainy tropical

C

Semi-arid tropical

D

Temperate marine

Explanation

In the graph the temperature ranges from 15° to 25°. So, the graph indicates wet and dry tropical region, and in this region rain fall does not exceed 25 cm.

Q 3.

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Willy is :

A

a type of tree grown in temperate regions

B

a wind that blows in a desert

a tropical cyclone of the north-west Australia

D

a kind of common fish found near Laccadives Islands

Explanation

It is a tropical cyclone of north-west Australia. Willy Willy originates in the Timor sea and causes rainfall in different parts of Australia.

Q 4.

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Which one of the following layers of the atmosphere is responsible for the deflection of radio waves?

A

Troposphere

B

Stratosphere

C

Mesosphere

Ionosphere

Explanation

Ionosphere is the top layer of the atmosphere. Radio waves are deflected in the ionosphere of the atmosphere. Ionosphere is composed of D, E and F layers. D layer (60 km from earth) is good at absorbing AM radio waves.

Q 5.

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Given below are two statements one labelled as Assertion(A) and the other labelled as Reason (R).
Assertion(A) : Areas near the equator receive rainfall throughout the year.
Reason (R) : High temperatures and high humidity cause convectional rain in most afternoons near the equator.
In the context of the above two statements, which one of the following is correct?

Both A and R are true and R is the correct explanation of A

B

Both A and R true but R is not a correct explanation ofA

C

A is true but R is false

D

A is false but R is true

Explanation

The assertion is correct and reason correctly explains the assertion because due to high temperature the atmospheric air gets heated and rises up. It cools down and precipitates while the cool air descends down to take the place of the vaccum.

Q 6.

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Diamond ring is a phenomenon observed:

A

at the start of a total solar eclipse

B

at the end of a total solar eclipse

only along the peripheral regions of the totality trail

D

only in the central regions of the totality trail

Explanation

Diamond ring is observed during solar eclipse, only along the peripheral regions of the totality trail.

Q 7.

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Match List-I with List-II and select the correct answer using the codes given below the lists:

List-I (Timber)List-II (Country)
A. Cedar1. Myanmar
B. Douglas Fir2. Canada
C. Mahogany3. Mexico
D. Teak4. Honduras

Codes:

A

A - 3; B- 2; C- 1; D-4

B

A - 3; B- 2; C- 4; D-1

C

A - 2; B- 3; C- 4; D-1

A - 2; B- 3; C- 1; D-4

Explanation

Cedar is found in Canada, Douglas fir is found in Mexico, Mahagony is found in Myanmar. Teak is found in Honduras.

Q 8.

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Who amongst the following was the first to state that the earth was spherical ?

Aristotle

B

Copernicus

C

Ptolemy

D

Strabo

Explanation

Aristotle in 340 B.C first stated that the earth was spherical in his book "On the Heaven".

Q 9.

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If the stars are seen to rise perpendicular to the horizon by an observer, he is located on the:

Equator

B

Tropic of Cancer

C

South Pole

D

North Pole

Explanation

If the stars are seen to rise perpendicular to the horizon by an observer then the observer is at the equator because celestical equator is an imaginary circle around the sky directly above the earth's equator. It is always 90° from the pole. All the stars rotate in a path that is parallel to the celestical equator.

Q 10.

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Sun's halo is produced by the refraction of light in:

A

water vapour in Stratus clouds

B

ice crystals in Cirro-Cumulus clouds

C

ice crystals in Cirrus clouds

dust particles in Stratus clouds

Explanation

The ice crystals suspended in cirrus clouds (5-10 k.m.) in the upper atmosphere are responsible for sun's halo.

Q 11.

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Which one among the following covers the highest percentage of forest area in the world?

Temperate coniferous forests

B

Temperate deciduous forests

C

Tropical monsoon forests

D

Tropical rain forests

Explanation

Temperature coniferous forests covers the highest percentage of forest area in the world.

Q 12.

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Which one of the following statements is correct?

A

The first meeting of the Parties (MOP) to the Cartagena Protocol on Biosafety was held in Phillippines in the year 2004.

B

India is not a signatory to the Biosafety protocol/ convention on Biological Diversity.

The Biosafety protoco1 deals with genetically modified organisms.

D

United State of America is member of the Biosafety protocol/convention on Biological diversity.

Explanation

Biosafety protocol is an agreement designed to regulate the international trade, handling and use of any genetically engineered organism that may have adverse effects on the conservation and sustainable use of biological diversity, taking also into account risks to the human health.
The first meeting was held in 2004 in Kuala Lumpur, Malaysia. India is a signatory member to it the Biosaflty protocol deals with genetically modified organism but they donot name them so. USA has sign it put not yet ratify this treaty.

Q 13.

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Assertion(A) : The same face of the moon is always presented to the earth.
Reason (R) : The moon rotates about its own axis in 23 and half days which is about the same time that is takes to orbit the earth.

Both A and R are true and R is the correct explanation of A

B

Both A and R are true but R is NOT a correct explanation of A

C

A is true but R is false

D

A is false but R is true

Explanation

We see the same face of the moon from earth in because the rotation of the earth is similar to moon 23.5 hrs.

Q 14.

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Assertion(A) : Existence of human life on Venus is highly improbable.
Reason (R): Venus has extremely high level of carbon dioxide in its atmosphere.

Both A and R are true and R is the correct explanation of A

B

Both A and R are true but R is NOT a correct explanation of A

C

A is true but R is false

D

A is false but R is true

Explanation

The atmosphere of Venus has carbon dioxcide primainly followed by nitrogen. Making it denser and hotter for the resistances of human life.

Q 15.

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Assertion(A) : Wind patterns are clockwise in the Northern Hemisphere and anti-clockwise in the Southern Hemisphere.
Reason (R) : The directions of wind patterns in the Northern and the Southern Hemisphere are governed by the Coriolis effect.

A

Both A and R are true and R is the correct explanation of A

B

Both A and R are true but R is NOT a correct explanation of A

C

A is true but R is false

A is false but R is true

Explanation

A is false as the direction of wind in the northern hemisphere is anit clock wise and in southern hemisphere it is clock wise. The explaination is correct as this is mainly due to coriolis effect.

Q 16.

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Where are the Balearic Islands located?

Mediterranean Sea

B

Black Sea

C

Baltic Sea

D

North Sea

Explanation

Balearic islands are located in Mediterrian sea. It is an autonomous division of Spain and the North African Coast.

Q 17.

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In which one of the following oceans Diamantine Trench is situated?

A

Pacific Ocean

B

Atlantic Ocean

Indian Ocean

D

Arctic Ocean

Explanation

Diamantine Trench is istuated in south-east part of Indian Ocean. The depth of Diamantine Trench is 8047 m.

Q 18.

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Assertion(A): To orbit around the Sun the planet Mars takes lesser time than the time taken by the earth.
Reason (R) : The diameter of the planet Mars is less than that of earth.
Codes:

A

Both 'A' and 'R' are individually true and 'R' is the correct explanation of 'A' .

B

Both 'A' and 'R' are individually true but 'R' is not the correct explanation of 'A'.

C

A' is true but 'R' is false.

A' is false but 'R' is true.

Explanation

A is incorrect as the mars revolution round the sun takes 1.88 years of Earth's revolution. The diametre of earth is 12,742 km (7,918 miles) and the mass is 6,734 km (4,200 miles).

Q 19.

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What is the average distance (approximate) between the sun and the earth?

A

70 x {tex}10^{5}{/tex} km

B

100 x {tex}10^{5}{/tex} km

C

110 x {tex}10^{6}{/tex} km

150 x {tex}10^{6}{/tex} km

Explanation

The actual average distance between the sun and the earth is 152 x {tex}10^{6}{/tex} km which is near to 150 x {tex}10^{6}{/tex} km.

Q 20.

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Consider the following statements:
1. Either of the two belts over the oceans at about 30° to 35° N and S Latitudes is known as Horse latitude.
2. Horse latitudes are low pressure belts.
Which of the statements given above is/are correct?

1 only

B

2 only

C

Both 1 and 2

D

Neither 1 nor 2

Explanation

25°-35° N and S in both hemisphere is a high pressure belt and high temperature zone. This belt owes its origin to the rotation of the earth and sinking and setting down of winds. This zone is of high pressure is called horse latitude because in ancient times the merchant carrying horse in their ships had to throw out of some of the horse while passing through this zone of calm in order to lighten their ships.

Q 21.

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Consider the following statements:
1. Annual range of temperature is greater in the Pacific Ocean than that in the Atlantic Ocean.
2. 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?

A

1 only

2 only

C

Both 1 and 2

D

Neither 1 nor 2

Explanation

Climates in the Southern Hemisphere tends to be milder than those in the Northern Hemisphere. Southern Hemisphere has significantly more ocean and less land. The water heats up and cools down more slowly than land. The annual range of temperature is higher in Atlantic Ocean than in Pacifica ocean.

Q 22.

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Consider the following statements:
1. Albedo of an object determines its visual brightness when viewed with reflected light.
2. Albedo of Mercury is much greater than the albedo of the Earth.
Which of the statements given above is/are correct?

1 only

B

2 only

C

Both 1 and 2

D

Neither 1 nor 2

Explanation

Albedo is the fraction of the incident sunlight that is reflected. When an object reflects most of the light that hits it and looks bright then it has high albedo. Albedo of mercury is 0.142 and that of the earth its 0.367.

Q 23.

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A new type of El Nino called El Nino Modoki appeared in the news. In this context, consider the following statements:
1. Normal El Nino forms in the Central Pacific Ocean whereas El Nino Modoki forms in Eastern Pacific Ocean
2. Normal El Nino results in diminished hurricanes in the Atlantic Ocean but El Nino Modoki results in a greater number of hurricanes with greater frequency.Which of the statements given above is/are correct?

A

1 only

2 only

C

Both 1 and 2

D

Neither 1 nor 2

Explanation

Normal El Nino forms in south-eastern Pacific whereas as El Nino Modoki forms in central Pacific and causes greater number of hurricanes.

Q 24.

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Which one of the following reflects back more sunlight as compared to other three?

A

Sand desert

B

Paddy crop

Land covered with fresh snow

D

Prairie land

Explanation

Snow's Albedo is highest.

Q 25.

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A geographic region has the following distinct characteristics:
1. Warm and dry climate
2. Mild and wet winter
3. Evergreen Oak trees
The above features are distinct characteristics of which one of the following regions?

Mediterranean

B

Eastern China

C

Central Asia

D

Atlantic coast of North America

Explanation

Mediterrian climate have mild, rainy winter and hot, dry summers and Evergreen, Oak trees.