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21
'Recycling' is a method for conserving the resources of
Discuss
Answer & Solution
Answer: Option C
Solution:
'Recycling' is a method for conserving the resources of Copper. To date only about 12% of known copper resources have been mined. However copper ore is a finite resource and it makes sense to conserve ore by recycling.
22
Horizontal transfer of heat is known as
Discuss
Answer & Solution
Answer: Option A
Solution:
Horizontal transfer of heat is known as Advection. This type of heat transfer is not powered by variations in density, but rather requires an outside force, such as wind or currents, to displace the particles of the medium.
23
The Trans-Siberian railway links
Discuss
Answer & Solution
Answer: Option D
Solution:
The Trans-Siberian railway links Leningrad with Vladivostok. The Trans-Siberian rail tour is one of the most interesting adventures anyone can take and Russian Trains.
24
When humidity is expressed in terms of percentage then it is known as
Discuss
Answer & Solution
Answer: Option C
Solution:
When humidity is expressed in terms of percentage then it is known as Relative humidity. Relative humidity is expressed as a percentage. The relative humidity is 100% if the air is saturated with water vapor and 0% if no water vapor is present in the air at all.
25
The snowline is the line on mountain or hill slope which
Discuss
Answer & Solution
Answer: Option B
Solution:
The snowline is the line on mountain or hill slope which is the lowest limit of perpetual snow. The Imaginary line on a mountain or a hill which forms the lower limit of perpetual snow is called snow line. Below this line the snow melts away and above this line snow never melts. The snow line does not exist at the same level everywhere on earth. The average altitude of snow line is 5500m in the equatorial region, 4000-5000m in the Himalayan region, 2700m in the Alps and 0m in the polar regions.
26
Consider the following statements :
1. Where fold mountains run parallel and close to the coast, continental shelf is narrow or absent
2. The average depth of continental shelf is 100 meters
3. Submarine canyons are mostly found in continental slope
4. The submarine flat topped mountains are called guyots.
Discuss
Answer & Solution
Answer: Option B
Solution:
The following statements that are correct are: Where fold mountains run parallel and close to the coast, continental shelf is narrow or absent, Submarine canyons are mostly found in continental slope and The submarine flat topped mountains are called guyots.
27
The International Date Line is
Discuss
Answer & Solution
Answer: Option A
Solution:
The International Date Line is 180° longitude. The 180° line on the globe is the basis for the International Date Line. The 180° line of longitude, which runs from west to east, on the globe indicates the meridian which divides the Earth to north and south parts.
28
The ports which function as the collection centres where the goods are brought from different countries to be sent to others besides their own country are called ________
Discuss
Answer & Solution
Answer: Option C
Solution:
Entrepôt refers to a port, city or warehouse where goods are imported to be stored or traded for re-export. The ports which function as the collection centres where the goods are brought from different countries to be sent to others besides their own country are called Entreport ports.
29
Which of the following natural regions is known as the "big game country" a land of "Safari"?
Discuss
Answer & Solution
Answer: Option C
Solution:
Savanna or Tropical Grassland region is known as the "big game country" a land of "Safari".
30
The Gutenburg discontinuity separates ________.
Discuss
Answer & Solution
Answer: Option D
Solution:
The Gutenburg discontinuity separates Inner mantle and the core. It separates and divides the lower mantle from the outer core. The lower mantle above the Gutenberg line is solid, but the outer core below the line is liquid molten.