An examination of arid regions. The focus is on the climatological reasons for desert locations (e.g., offshore trade winds, cold currents), and typical wind-eroded/deposited landforms (pediments, sand dunes, loess).
Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R).
Assertion (A) : Deserts can be effective sources for the production of perennial energy.
Reason (R) : As much energy consumed by mankind in one year, Desert can receive the energy more than that in only 6 hours from the Sun.
Choose the correct answer from the following code –
(A) and (R), both are correct and (R) is the correct explanation of
(A).
Correct Answer:
(A) and (R), both are correct, but (R) is not the correct explanation of
Gerhard Knies, a German Particle Physicist, arrived at the remarkable conclusion that in just six hours, the world's deserts receive more energy from the sun than human consume in a year. In this way, deserts can be a source of perennial energy. So, both the statement and reason are correct and the reason is the correct explanation of the statement.
Ques: 2
Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R). Choose the correct answer from the codes given below:
Assertion (A): Most of the hot deserts of the world are located on the Western margins of continents between 15º-30º North and South latitudes.
Reason (R): Trade winds lose their moisture and humidity as it moves westward.
Codes:
(A) and (R) are true and (R) is the correct explanation of
(A)
Correct Answer:
(A) and (R) are true but (R) is not the correct explanation of
Most of the hot deserts of the world are located on the Western margins of continents between 15º - 30º North and South Latitudes. Sahara and Kalahari deserts in Africa and Atacama in South America are examples. Trade winds towards this region reach from Northern Hemisphere and Southern Hemispheres. Thus, upon reaching the western part of the continent, they turn dry. This causes very title rainfall in this region. It is an important factor for desert formation in this region. The reason, therefore, is the correct interpretation of the statement. Hence, option (a) is correct.
Ques: 3
Desert is defined as the area where –
Correct Answer:
(C) Annual rain occurs less than 25 Cm
Desert is a region where annual precipitation is less than 25cm.
Ques: 4
The biggest desert in the world is:
Correct Answer:
(C) Sahara
The biggest (non-polar) desert of the world is the Sahara Desert. The largest desert in the world is Antarctica. Sahara is the largest hot desert in the world. It's situated in North Africa and has an area measured at roughly 3.6 million square miles.
Ques: 5
The most populated desert in the world is –
Correct Answer:
(C) Thar
The Thar desert is the most densely populated desert in the world with a population density of 83 people per square km whereas other deserts have a population density of 7 people per square km.
Ques: 6
Takla Makan desert lies in –
Correct Answer:
(B) China
Takla Makan Desert is situated in Xinjiang province of China. Located inside the Tarim Basin in Southern Xinjiang, it is bounded by the Kunlun Mountains to the south, the Pamir Mountains to the west, the Tian Shan range to the north, and the Gobi Desert to the east.
Ques: 7
Which of the following is not correctly matched?
Desert - Country
Correct Answer:
(D)
Gibson - Brazil
Gibson desert, an interim Australian bioregion, is a large desert that covers a large dry area in the State of Western Australia not in Brazil. Other options are correctly matched.
Ques: 8
Dasht-e-Lut is located in –
Correct Answer:
(A) Iran
Dasht-e-Lut is a large salt desert in Kerman province of Iran. NASA's tests have revealed that it is the world's warmest desert. Its temperature was measured 70.70C by NASA's Agua satellite in 2005.
Ques: 9
In which country is the Gobi desert located?
Correct Answer:
(C) Mongolia
Gobi Desert stretches into northern China and southern Mongolia This desert is surrounded by Altai mountain.
Ques: 10
The Great Victorian Desert is located at –
Correct Answer:
(A) Australia
The Great Victorian desert is located in South-west Australia. It is the largest desert in Australia. It is spread over 348,750 sq. km of area.
Ques: 11
The largest desert of South Asia is:
Correct Answer:
(D)
Thar
Thar desert which is also known as ‘Great Indian Desert’. It is the largest desert of South Asia. It stretches across western India to South-East Pakistan. Location of the remaining deserts is as follows: Atacama Desert - Chile Colorado Desert - California (U.S.A) Kalahari Desert - Botswana, Namibia and South Africa
Ques: 12
Which one of the following statements is not true regarding the Atacama?
Correct Answer:
(C) It lies in Southern Chile.
The Atacama Desert, located in South America, is the driest place on the Earth. There are huge deposits of Sodium Nitrate, copper and other minerals. This desert is stretched along northern Chile and not in southern Chile.
Ques: 13
Which one of the following is a temperate desert?
Correct Answer:
(D)
Patagonian Desert
Temperate desert is found between 300 to 600 latitudes. Deserts which come under the category of temperate deserts, are Gobi desert, Ladakh desert and Patagonia desert.
Ques: 14
Consider the following statements:
Tropical deserts in the world are found in the trade wind bands of western ends of Continents-
In India, Eastern Himalayan region receives more rain from North-eastern winds.
Which among the above statements is/are/ correct?
Code:
Correct Answer:
(A) Only 1
Tropical hot deserts are often found in the region of trade wind band between 150 to 300 South or North of Equator in the western side of continents. Therefore statement 1 is correct. In India, Eastern Himalayan region receives more rain from the Southwest winds coming from the Bay of Bengal. Therefore statement 2 is wrong
Ques: 15
The Kalahari Desert lies in
1. Botswana 2. Namibia
3. Zaire 4. Zambia
Select the correct answer from the code given below –
Code:
Correct Answer:
(C) 1 and 2
The Kalahari a large desert spreading over 900000 sq km. in the interior of Southern Africa. It mainly occupies Botswana, parts of Namibia and South Africa. Since, South Africa is not mentioned in the options, therefore, the correct answer will be option (c) (Botswana and Namibia).
Ques: 16
Which of the following deserts is located in the Southern Hemisphere?
Correct Answer:
(A) Kalahari
The Kalahari Desert is located in the Southern hemisphere. It spread over 90,000 square km. across (mainly) Botswana, Namibia and South Africa. The name of the Desert comes from Tswana word Kgala, which means "the great thirst" or "a waterless place".
Ques: 17
What could be the main reason/reasons for the formation of African and Eurasian desert belt?
It is located in the sub-tropical high-pressure cells.
It is under the influence of warm ocean currents.
Which of the statements given above is/are correct?
Correct Answer:
(A) 1 only
Most desert regions are the result of large climatic patterns. The sub-tropical high-pressure belts are adiabatic in nature hence they bring little rainfall to the African and Eurasian desert region. Warm Ocean currents are not a necessary condition for the desert belt. For instance, the, Gobi cold desert doesn’t come under the influence of any warm current.
