Physical Geography (Part-II) (Railway)

Total Questions: 32

1. _______is the closest star to the Earth. [RRB NTPC CBT-1 Exam, 05.04.2021 (Shift-I)]

Correct Answer: (2) Sun
Solution:The closest star to the Earth is actually our very own Sun at 93,000,000 miles (150,000,000 km).

• The next closest star is Proxima Centauri.

• It lies at a distance of about  4.3 light Year.

2. What is the approximate contribution of mica in the formation of the earth's crust? [RRB NTPC CBT-1 Exam, 06.04.2021 (Shift-I)]

Correct Answer: (2) 24%
Solution:The most outer layer of the Earth is called Earth crust.

The percentage of element occuring Earth crust are following:

ElementQuantity (%)
Oxygen47
Silicon28
Aluminium8
Mica4
Iran5
Others2

3. The Chipko movement was related with: [RRB NTPC CBT-1 Exam, 06.04.2021 (Shift-I)]

Correct Answer: (4) environment protection
Solution:The Chipko movement was a non-violent agitation in 1973.

• It was aimed at protection and conservation of trees.

• The movement originated in Uttarakhand (then part of UttarPradesh) in 1973.

4. Which gas can be fixed in the atmosphere by lightning? [RRB NTPC CBT-1 Exam, 07.04.2021 (Shift-I)]

Correct Answer: (3) Nitrogen
Solution:During lightning, nitrogen and oxygen from the atmosphere combine together and form nitrogen oxides.

• Nitrogen in the atmosphere can be transformed into a plant-usable form, a process called nitrogen fixation, by lightning.

5. Which of the following activity is not responsible for green house effect? [RRB NTPC CBT-1 Exam, 07.04.2021 (Shift-I)]

Correct Answer: (4) Use of solar car for transport
Solution:Greenhouse gas emissions. such as carbon dioxide (CO₂), which can trap additional heat from the sun in the earth's atmosphere, causing the 'greenhouse effect' and climate change. CO₂ is the main green house gas produced by motor vehicles.

• To reduce greenhouse gas emissions, the transition to electric vehicles and solar energy is must.

6. Soil erosion is one of the mafor threats to the environment, Which of the following can help to prevent erosion of soil? [RRB Group 'D' CBT Exam, 17.08.2022 (Shift-II)]

Correct Answer: (4) Contour ploughing
Solution:Contour ploughing is an adequate measure for reducing soil erosion and increasing the availability of water for crops.

• Contour plowing/ploughing conserves soil by following the lay of the land and creating ridges that form a water break to prevent soil erosion.

• Furrows that do not follow the lay of the land cause rapid runoff during rainfall by forming a convenient channel for the water to flow downhill.

7. Soil degradation is one of the major environmental problems being faced these days. A wide range of techniques to conserve soil are mentioned below. select the INCORRECT option. [RRB Group 'D' CBT Exam. 17.08.2002 (Shift-III)]

Correct Answer: (4) Overgrazing
Solution:Overgrasing is one of the reasons of soil degradation.

• Overgrasing leads to land degradation as it removes the humus content, strips the soil of the vegetal cover making it dry and poor in nutrients.

•  Overgrasing causes land degradation in states of Maharashtra Gujarat, and Madhya Pradesh.

8. What is the direction of the Inter Tropical Convergence Zone in winter? [RRB Group 'D' CBT Exam. 17.08.2002 (Shift-III)]

Correct Answer: (2) Southward
Solution:The Intertropical Convergence Zone (ITCZ) shifts from north and south seasonally according to the movement of the Sun.

• In winter, due to apparent movement of sun toward tropic of Capricorn, the ITCZ moves southward. It moves northward in the Northern Hemisphere in summer.

• ITCZ is basically a low pressure belt encircling Earth near the Equator where the trade winds meet.

9. Safflower, Shisham, Khair, arjun and mulberry are the main trees of which vegetation? [RRB Group 'D' CBT Exam, 18.08.2022 (Shift-II)]

Correct Answer: (3) Tropical Deciduous Forests
Solution:Bamboos, sal, shisham. sandalwood, khair, kusum, arjun and mulberry are some of the commercially valuable trees that grow in the tropical deciduous forests.

•  Tropical deciduous forests are the most widespread forests in India in terms of total area.

10. The bends formed in the river when river water erodes its banks on the outside of the channel are known as: [RRB Group 'D' CBT Exam, 18.08.2022 (Shift-III)]

Correct Answer: (3) Meanders
Solution:A meander is one of a series of regular sinuous curves in the channel of a river or other watercourse.

•  Meanders form because water erodes the outside of curves and deposits eroded material on the inside.

• The river eventually erodes to form an oxbow lake.