World & Physical Geography MCQs
World Geography Multiple Choice Questions (MCQs) Quiz for State and UPSC Civil Services Examinations. Objective Questions on Physical Geography and World Geography for competitive examinations.
21. The Mesosphere lies up to how many kilometres from the Earth’s surface
[A] 18 km
[B] 50 km
[C] 80 km
[D] 120 km
Show Answer
Correct Answer: C [80 km]
Notes:
The Mesosphere is the layer of the earth’s atmosphere which is an intermediate layer beyond the ozone layer. It lies upto an altitude of 80 km from the earth’s surface. The temperature gradually falls to -100°C at 80 km altitude in this layer. The meteorites burn up in this layer on entering from the space.
22. What is the albedo of the earth as a whole?
[A] 55 %
[B] 25 %
[C] 15 %
[D] 35 %
Show Answer
Correct Answer: D [35 %]
Notes:
The proportion of insolation that is reflected back by the surface is called its albedo. It depends upon the nature of the surface upon which the solar radiation is incident and the angle of incidence of the solar beam. The albedo for the earth as a whole is called the planetary albedo and it is 35%.
23. What are lines connecting places having equal pressure called?
[A] Isotherms
[B] Isohalines
[C] Isobars
[D] Eurytherm
Show Answer
Correct Answer: C [Isobars]
Notes:
The force exerted on the surface by the column of air above it is called atmospheric pressure or air pressure. It is measured by means of an instrument called barometer. Isobars are lines connecting places having equal pressure. It is measured at any station after being reduced to sea level.
24. The Challenger Deep is located in which among the following oceans?
[A] Pacific Ocean
[B] Atlantic Ocean
[C] Indian Ocean
[D] Southern Ocean
Show Answer
Correct Answer: A [Pacific Ocean ]
Notes:
The Pacific Ocean is the largest ocean in the Earth covering one-third area. The overall shape of the ocean is triangular and the average depth is 4,500 m.
Challenger Deep in the Mariana Trench, located in the western north Pacific, is the deepest point in the world, reaching a depth of 10,928 meters
25. Which among the following statements is/are correct about Salinity of ocean water?
- Salinity is highest in partly landlocked seas.
- Lowest salinities are found where rainfall is heavy
Select the correct code from the options given below:
[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 & 2
Show Answer
Correct Answer: C [Both 1 & 2]
Notes:
Salinity means the total content of dissolved salts in Sea or Ocean.
The salinity of Ocean water in the surface layer of oceans depend mainly on evaporation and precipitation.
Lowest salinities are found where rainfall is heavy and near the mouths of major rivers. Salinity is highest in partly landlocked seas in dry, hot regions because here the evaporation rate is high and stream discharge is minimal.
26. Which among the following is/are primary forces which influence the ocean currents?
- Salinity difference
- Heating by solar energy
- Wind
- Gravity
- Coriolis Force
Select the correct code from the options given below:
[A] Only 1, 2 & 4
[B] 2, 3, 4 & 5
[C] 1, 2, 3 & 5
[D] 1, 2, 3, 4 & 5
Show Answer
Correct Answer: B [2, 3, 4 & 5]
Notes:
Ocean currents are influenced by two types of forces namely:
primary forces that initiate the movement of water – heating by solar energy, wind, gravity and Coriolis force.
secondary forces that influence the currents to flow – Temperature difference, Salinity difference.
27. Which among the following statements is/are correct about coastal climates?
- It experiences reliable and constant precipitation throughout the entire year.
- Thunderstorms are very frequent since hot and cold air masses meet frequently in the region.
Select the correct code from the options given below:
[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 & 2
Show Answer
Correct Answer: A [Only 1]
Notes:
An oceanic climate is also known as a marine climate or temperate oceanic climate. It typically lacks a dry season, as precipitation is more evenly dispersed throughout the year. Despite this, thunderstorms are quite rare since hot and cold air masses meet infrequently in the region.
28. Which among the following statements is/are correct about the Grassland Biome?
- Grassland biomes are normally situated between a forest and a desert.
- Twenty-five percent of the Earth is covered by the grassland biome.
- There is a grassland biome on each continent with the exception of Antarctica.
Select the correct code from the options given below:
[A] Only 1
[B] Only 3
[C] Only 2 & 3
[D] 1, 2 & 3
Show Answer
Correct Answer: D [1, 2 & 3]
Notes:
Grasslands are characterized as lands dominated by grasses rather than large shrubs or trees. Grassland biomes are normally situated between a forest and a desert. In fact, grasslands surround every desert in Asia. Twenty-five percent of the Earth is covered by the grassland biome. There is a grassland biome on each continent with the exception of Antarctica.
29. The Nordic, Mediterranean, Dinaric and Alpine are sub-races of which among the following race?
[A] Negroid
[B] Caucasoid
[C] Australoid
[D] Mongoloid
Show Answer
Correct Answer: B [Caucasoid]
Notes:
Caucasoid includes people from Europe, North Africa, the Horn of Africa, Western Asia (the Middle East), parts of Central Asia and South Asia. The Caucasoids are further classified into various sub-races such as Aryans (including some Indo-Europeans), Semitic (Arabs and Israelis) Hamitic (Berber-Cushitic-Egyptian races), Nordic, Mediterranean, Dinaric, Alpine, Arabid, East Baltic, Turanid, Iranid, Armenoid and so on.
30. The “Denmark Strait” is a strait located between Greenland, an autonomous territory of Denmark, and which another country?
[A] Canada
[B] Norway
[C] Iceland
[D] Sweden
Show Answer
Correct Answer: C [Iceland]
Notes:
The Denmark Strait, also known as the Greenland Strait, is a strait located in between Greenland, an autonomous territory of Denmark, and Iceland. It is located in the North Atlantic Ocen which connects the Greenland Sea, an extension of theArtcic Ocean, with the Irminger Sea, part of the Atlantic Ocean. It houses Denmark Strait Cataract, the world’s largest known underwater waterfall. It was an important battlefield during World War II as the naval forces of both Germany and Great Britain fought the “Batlle of Denmark Strait” in 1941.
