In which one of the following oceans Diamantina Trench is situated ?
Correct Answer:
(C)
Indian Ocean
Diamantina Trench is in the Indian Ocean. It is located about 1125 km south-west from the Perth Basin. It is also known as Diamantina fracture zone.
Ques:
72
Consider the following statements regarding Ocean trenches?
They occur at the bases of continental slopes associated with active the volcanoes and strong earthquake.
They begin where the bottom of continental shelf sharply drops off into a steep slope.
They are found in the tropical oceans consisting of coral reefs surrounding a central depression.
Which of the statements given above are correct?
Correct Answer:
(A)
1 only
Oceanic deeps or trenches are the deepest parts of the oceans. The trenches are relatively steep sided, narrow basins. They are some 3-5Km deeper than the surrounding ocean floor. They occur at the bases of continental slopes and along island arcs and are associated with active volcanoes and strong earthquakes.
Statement 2 is incorrect: The continental slope connects the continental shelf and the ocean basins. It begins where the bottom of the continental shelf sharply drops off into a steep slope.
Statement 3 is incorrect: Atolls are low islands found in the tropical oceans consisting of coral reefs surrounding a central depression.
Ques:
73
Consider the following pairs :
(River) (Flows into)
Mekong Andaman Sea
Thames Irish Sea
Volga Caspian Sea
Zambezi Indian Ocean
Which of the pairs given above is/are correctly
matched?
Correct Answer:
(C)
3 and 4 only
Volga is the longest river in Europe carrying largest volume of water. It drains into Caspian Sea. Zambezi river either crosses or runs along the borders of six countries - Angola, Zambia, Namibia, Botswana, Zimbabwe and Mozambique and finally drains in to Indian Ocean. Thames river originates in the Cotswold Hills and drains into North Sea. Mekong is the longest river in Southeast Asia. It drains into the South China Sea.
Ques:
74
The largest river of the world in terms of drainage area, is-
Correct Answer:
(B)
Amazon
South America’s Amazon river is the largest river in terms of its volume of flow in the world. Its area of drainage is about 70 lakhs square km. and the length is approximately 6,400 km. In terms of length, the largest river of the world is the Nile which flows in East Africa up to the distance of 6,650km. Congo River flows in Central Africa and covers distance about 4,700 km and it crosses the equator twice during its flow. Its drainage area is about 3,45,7000 square km. Mississippi-Missouri river system is located in North America and it is the largest river system of North-America.
Ques:
75
Which of the following rivers crosses the Equator twice?
Correct Answer:
(A)
Zaire
Congo river is also known as 'Zaire river' is the second longest river after the Nile in the African continent. It crosses the Equator twice. The Congo River's course is unique in that it flows both north and south of the equator, making it the only major river to cross the equator twice. Amazon and Congo are two rivers that flows out of the equatorial zone.
Ques:
76
Which one among the following rivers is the longest ?
Correct Answer:
(A)
Amazon
The world's five longest rivers and their respective length is given below :
(River Name) (Length)
Nile 6650 Km
Amazon 6400 Km
Yangtze 6300 Km
Mississippi Missouri-Jefferson 6,275 Km
Yenisei-Angora-Selenge 5,539 Km
Ques:
77
The longest river of South America –
Correct Answer:
(B)
Amazon
Amazon is the longest river in South America. This river is about 6400 km long. Ships can sail up to 1,600 km distance. Apart from this, Nile (6,650 km) of Africa, Mississippi-Missouri Jefferson (6,275 km) of U.S.A., and the river Ganga (2,525 km) of India are the prominent rivers. In terms of length the Nile river is the longest river in the world. It emerges from equatorial countries of Uganda and Burundi and flowing through Sudan and Egypt and falls into the Mediterranean Sea, Mississippi Missouri falls into the Gulf of Mexico, Mississippi Missouri is the longest river of North America.
Ques:
78
Which of the following countries is not under the drainage area of the Nile river-
Correct Answer:
(A)
Chad
Countries like Burundi, Rwanda, D.R. Congo, Ethiopia, Sudan, South Sudan, Uganda and Egypt are the part of the drainage basin of the Nile river. 'Chad’ does not come under the drainage basin of River Nile. Therefore, option (a) is the correct answer.
Ques:
79
The Blue Nile river originates from
Correct Answer:
(B)
Lake Tana
The Blue Nile river originates from the lake Tana in Ethiopia. The upper course of the river is called the Abbay in Ethiopia.
Ques:
80
Consider the map given below : The river shown on the map is :