GEOGRAPHY MCQS SET 181

GEOGRAPHY MCQS SET 181

1801) With respect to thermocline, choose the correct statement
1. layer in which temperature changes more rapidly than it does in layers above as below.
2. It depends upon season, latitude and turbulent mixing by wind
3. It may be semi permanent feature of body of water in which they occur.
A) 1 only
B) 1 and 2 only
C) 3 only
D) all of them

Answer: all of them
   
1802) Which of the following conditions hinders the development of corals?
A) Temperature of water between 20-21°C
B) Existence of submarine bench or a platform
C) Sediment free water
D) Fresh water

Answer: Sediment free water
   
1803) Thermohaline is a part of large scale ocean circulation around the earth.
Choose correct statements
1. It is driven by density gradient.
2. It includes both the processes-of sinking and upwelling of waters.
3. State of circulation has large impact on climate of Earth.
4. It is sometimes called ocean conveyor belt or meridional overturning circulation
A) 1 and 4
B) 1 and 3
C) 1, 2 and 3
D) All of these

Answer: All of these
   
1804) Consider the following statements with reference to the continental shelf
1. It is submerged in water.
2. Its average depth is 100 fathoms
3. Its higher percentage is found in Pacific ocean.
4. It is wider, where high mountain close and parallel to the coast.
Which of the statements given above is/are correct?
A) All of the below
B) 1, 2 and 3
C) 1 and 2
D) 0nly 1

Answer: 1 and 2
   
1805) The river bank is weakest where river turns. This is because water
A) gets concentrated on the inner bank of the turn, making it denser
B) effectively bounces off the a bank as it turns exerting an extreme pressure on the bank
C) flows faster as it turns
D) reacts more effectively with the bank at a turn

Answer: effectively bounces off the a bank as it turns exerting an extreme pressure on the bank

1806) Which one among the following sequences of water bodies, from low to higher salinity concentration, correct?
A) Gulf of California Baltic Seas-Red Sea Arctic Sea
B) Baltic Sea-Arctic Sea-Gulf California Red Sea
C) Red Sea Gulf of California-Arctic Sea-Baltic Sea
D) Arctic Sea Gulf of California-Baltic Sea-Red Sea

Answer: Baltic Sea-Arctic Sea-Gulf California Red Sea
   
1807) Which of the following factors affect the origin and nature of movement ocean current?
A) Gravitational force
B) Density differences
C) Direction and shape of coastline
D) All of the above

Answer: All of the above
   
1808) The coral reefs are the marine counterparts of
A) temperate forests
B) tropical rain forests
C) savannas
D) scrubland

Answer: tropical rain forests
   
1809) The acidification of oceans is increasing. Why is this phenomen cause of concern?
1. The growth and survival of calcareous phytoplankton will adversely affected.
2. The growth and survival of reefs will be adversely affected
3. The survival of some animals that have phytoplanktonic larvae will be adversely affected.
4. The cloud seeding and formation of clouds will be adversely affected.
Which of the statements is/are correct?
A) 1, 2 and 3
B) Only 2
C) 1 and 3
D) 1, 2, 3 and 4

Answer: 1, 2, 3 and 4
   
1810) Which of the following constitutes highest coverage of Earth's surface?
A) Pacific ocean
B) Atlantic ocean
C) Indian ocean
D) All the continents clubbed together

Answer: Pacific ocean