NTA UGC NET/JRF Re-Exam, June, 2024 Geography

Total Questions: 100

21. The Ekman spiral effect explains_______.

Correct Answer: (a) The deflection in the direction of flow of surface current.
Solution:

The Ekman spiral effect explains the deflection of surface currents. The direction of the wind and the direction of the current generated by it do not coincide completely. The Earth's rotation causes the direction of the current to deflect.
In the Northern Hemisphere, this deflection is to the right and in the Southern Hemisphere, it is to the left. This phenomenon was first observed by Nansen and later proved mathematically by Ekman. In the Northern Hemisphere, the current generated by the wind will deflect at an angle of 45° to the right of its direction (wind), and in the Southern Hemisphere, it will deflect at an angle of 45° to the left.

22. Arrange the following gases in descending order of their share in the composition of the atmosphere.

A. Carbon dioxide
B. Hydrogen
C. Argon
D. Helium
Choose the correct answer from the option given below:

Correct Answer: (a) C, A, D, B
Solution:

The percentages of various gases in the composition of the atmosphere, in descending order, are as follows:
(Gas) (in percent by mass)
Nitrogen -78.8%
Oxygen -20.95%
Argon -0.93%
Carbon dioxide - 0.03%
Nion -0.002%
Krypton - 0.001%
Helium -0.0005%
Xenon -0.00009%
Hydrogen - 0.00005%
Therefore, option (a) is correct.

23. Which of the following is NOT a determinant of voting behaviour in India?

Correct Answer: (b) Age of Candidate
Solution:

Voting behavior in India is influenced by number of factors, such as the candidate's caste, the leader's image (charismatic leader), the candidate's party, etc. However, the candidate's age does not play a significant role in determining voting behavior.

24. Match List-I with List-II

Correct Answer: (d) A-II, B-I, C-IV, D-III
Solution:

List I (Landform)            List II (Earthquake)
Wasatch Range             - Mountain building
Colorado Plateau          - Continental formation
Narmada Valley            - Faulting
Laki Plain                       - Volcanic origin
Therefore, option (d) is correctly matched.

25. Identify correct statements with reference to the heat budget of the Earth.

A. In the albedo of the earth-atmosphere system dominant role is played by clouds.
B. Out of the incoming solar radiation more units are absorbed by atmosphere as compared to the earth surface.
C. In the latitudinal belt of 30°N to Arctic circle the amount of incoming solar radiation is more than that of the outgoing terrestrial radiation
D. In latitudinal heat transfer atmospheric circulation dominates over oceanic circulations. Choose the corerct answer from the options given below.

Correct Answer: (d) A and D only
Solution:

Of the 100 units of incoming solar radiation, 35 are reflected into space before reaching the Earth's surface, of which 27 are reflected by clouds. Therefore, clouds play a major role in the albedo of the Earth's atmosphere system. Except for the first 35 units, the remaining 65 units are absorbed, 14 by the atmosphere and 51 by the Earth's surface.
Therefore, the statement that the atmosphere absorbs more of the incoming solar radiation than the Earth's surface is incorrect. In the latitudinal belt from 30° north to the Arctic Circle, incoming solar radiation is not greater than outgoing terrestrial radiation, but rather less. Therefore, the given statement is incorrect.
In latitudinal heat transfer, atmospheric circulation is stronger than oceanic circulation, because the general circulation of the atmosphere also affects the oceans. Large-scale winds in the atmosphere cause ocean currents to flow at slower and faster speeds. Therefore, the given statement is correct. Thus, option (d) is correct.

26. The workers engaged in secondary activities are also called ______.

Correct Answer: (a) Blue-collar workers
Solution:

Workers engaged in secondary activities are also called blue-collar workers. Occupations in this category primarily convert materials obtained from primary occupations into manufactured goods. For example, iron is converted into steel, wheat into flour, wood into furniture and paper.
Those engaged in tertiary activities are called pink-collar workers, those engaged in quaternary activities are called white-collar workers, those engaged in quaternary activities are called gold-collar workers, and those engaged in primary activities are called red-collar workers.

27. Arrange the four distinct elements in standard hill-slope from ridge to valley.

A. Free-face slope
B. Concave slope
C. Convex slope
D. Rectilinear slope
Choose the correct answer from the options given below.

Correct Answer: (b) C, A, D, B
Solution:The correct order of the four different elements of a standard mountain slope from ridge to valley is: Convex slope → Free surface slope→ Rectilinear slope → Concave slopе.

28. Identify correct statements about relief features of the oceans.

A. Telegraph plateau and Albatross plateau are located in North Atlantic and South Atlantic respectively.
B. The Walvis Ridge separates Angloa basin from Agulhas basin
C. Carlsberg Ridge is located in Indian Ocean.
D. Amsterdam-st. paul plateau is located in the south pacific ocean.
Choose the correct answer from the options given below.

Correct Answer: (c) B and C only
Solution:

Telegraph Plateau is in the North Atlantic Ocean, while Albatross Plateau is in the South Pacific Ocean, not the South Atlantic Ocean. Walvis Ridge separates the Angola Basin from the Agulhas Basin. Carlsberg Ridge is located in the Indian Ocean. Amsterdam-Saint Paul Plateau is located in the South Indian Ocean, not the South Pacific Ocean. Therefore, statements (B) and (C) are correct, while statements (A) and (D) are not correct.

29. Identify correct statements with reference to transportation in India.

A. The share of road transportation is more than the share of rail transport in passenger traffic. B. Development of economic corridors and multi-modal logistic parks are key components of the Bharatmala Project.
C. Under the Sagarmala project, a new mega port will be developed at Belikeri on Tamil Nadu coast.
D. The National Waterway number 5 is currently being developed in Goa to transport iron ore to Marmagao port.
Choose the correct answer from the options given below.

Correct Answer: (a) A and B only
Solution:

India's road network is the second largest in the world. Road transport's share in passenger traffic exceeds rail transport's. The Bharatmala project includes the development of economic corridors and multi-modal logistics parks as key components.
Under the Sagarmala project, a new major port will be developed at Bellikeri, which is in Karnataka, not Tamil Nadu. National Waterway No. 5 includes the Matai River, the Mahanadi delta channel, the Brahmani River, and a special stretch of the Brahmani River along with the East Coast Canal. The total length is 588 km. Therefore, statements (A) and (B) are correct, while statements (C) and (D) are incorrect. Therefore, option (a) is correct.

30. Which type of ecosystem has the highest mean net primary productivity (dry gram/m²/year).

Correct Answer: (b) Boreal Forest
Solution:

Among the given options, boreal forest has the highest average net primary productivity (in grams per square meter per year). Highest primary productivity is 10 to 25 grams per square meter per day. Examples: estuaries, coral reefs, alluvial plains at the meeting points of continents and oceans, etc.
Highest productivity is 3 to 16 grams per square meter per day. Examples: warm moist forests, shallow lakes, wetlands, etc. Lowest primary productivity is less than 0.5 grams per square meter per day. Examples: deep oceans, deserts, arctic regions, etc. Hence, option (b) is correct.