Physical Geography (Railway)

11. What is the radius of the earth? [RRB RPF/RPSF SI Exam, 13.01.2019 Shift-III]

(1) 4.37 x 10⁶ m
(2) 0.37 x 10⁶ m
(3) 6.37 x 10⁶ m
(4) 2.37 x 10⁶ m

Correct Answer: (3) 6.37 x 10⁶ m

Solution:The radius of the Earth is 6.37 x10⁶ m and its average density is 5.517 x 10³ kg m-³.

12. The layer visible to the eye of the Sun is called- [RRB RPF/RPSF SI Exam, 16.01.2019 Shift-II]

(1) Photosphere
(2) Lithosphere
(3) Atmosphere
(4) Ionosphere

Correct Answer: (1) Photosphere

Solution:The atmosphere of the sun is composed of several layers, mainly the photosphere. the chromosphere and the corona. The photosphere is the visible "surface" of the Sun.

13. Which of the following oceans has the longest coastline? [RRB RPF Constable Exam, 17.01.2019 Shift-III]

(1) Antarctic
(2) Arctic
(3) Indian
(4) Atlantic

Correct Answer: (4) Atlantic

Solution:The Atlantic Ocean (S' Shaped) is the second largest ocean in the world and it also has the longest coastline among all the oceans.

• The Pacific Ocean is the largest ocean as well as the deepest ocean in the world.

14. How long does it take for sunlight to reach the Earth? [RRB RPF Constable Exam, 25.01.2019 Shift-III]

(1) 9 minutes and 20 seconds
(2) 8 minutes and 50 seconds
(3) 9 minutes and 50 seconds
(4) 8 minutes and 20 seconds

Correct Answer: (4) 8 minutes and 20 seconds

Solution:It takes sunlight an average of 8 minutes and 20 seconds (500 second) to travel from the Sun to the Earth.

15. The abnormal rise in sea level during cyclonic storm, is known as_______. [RRB RPF Constable Exam, 02.02.2019 Shift-I]

(1) Storm Surge
(2) Harbour Waves
(3) Saash
(4) Tsunami

Correct Answer: (1) Storm Surge

Solution:Storm surge is abnormal rise in seawater level during a storm, measured as the height of the water above the normal estimated astronomical tide.

• The surge is caused primarily by a storm's winds pushing water onshore.

16. In which biom, the small plants grow very fast during the short period of hot and cold weather in high mountain areas? [RRB RPF Constable Exam, 11.02.2019 Shift-1]

(1) Savanna Biom
(2) Grass Land Biom
(3) Tundra Biom
(4) Desert Biom

Correct Answer: (3) Tundra Biom

Solution:The word Tundra is derived of a Finnish word "tunturi" which means treeless mountain tract.

• In Tundra biome, tree growth is hindered by low temperature and short growing seasons.

• The vegetation in Tundra is composed of dwarf shrubs, mosses, lichens etc.

17. The amount of moisture content in the air at a given time is called? [RRB RPF Constable Exam, 11.02.2019 Shift-1]

(1) Temperature
(2) Wind Speed
(3) Precipitation
(4) Humidity

Correct Answer: (4) Humidity

Solution:Humidity is the amount of water vapour in the air.

• The percentage of moisture present in the atmosphere as compared to its full capacity at a given temperature is known as the relative humidity.

18. Which of the following is a characteristics of the Peninsular rivers? [RRB RPF Constable Exam, 15.02.2018 Shift-I]

(1) Slope
(2) V-shaped valley
(3) Classified shallow valleys
(4) Gorge

Correct Answer: (3) Classified shallow valleys

Solution:Peninsular rivers are seasonal and flow of the rivers depends on rainfall.

• They are characterized by broad and shallow U-shaped valleys.

19. Where is the origin of Western Cyclonic disturbance? [RRB RPF Constable Exam. 15.02.2019 Shift-1]

(1) Arabian Sea
(2) Himalaya
(3) Mediterranean Sea
(4) Bay of Bengal

Correct Answer: (3) Mediterranean Sea

Solution:The western cyclonic disturbances are lowpressure systems that originate over the Mediterranean Sea.

• Under the influence of subtropical western jet streams, these wind systems reach India and cause rainfall.

20. What is the situation when the sun is perpendicular above the Tropic of Cancer? [RRB RPF Constable Exam, 18.02.2019 Shift-II]

(1) Winter Solstice
(2) Equinox
(3) Summer Solstice
(4) December Solstice

Correct Answer: (3) Summer Solstice

Solution:The summer solstice in the northern hemisphere occurs when the Sun is directly overhead at noon on the Tropic of Cancer.

• On 21 June, sunlight falls vertically over the Tropic of Cancer. This is the longest day in the Northern Hemisphere and hence it is known as the summer solstice.