hydrosphere & oceanography section 3 Practice Questions Answers Test with Solutions & More Shortcuts

Question : 46 [PSC (Pre) 2017]

A ridge of 64000 km length and 2000 km to 2400 km width passing through North and South Atlantic oceanic basins enters into the South Pacific oceanic basin through Indian oceanic and then from the middle of Australia and Antarctic. This ridge is

a) Mid - Oceanic Ridge

b) Dolfin - Challenger Ridge

c) Socotra-Lakshadweep - Changos-Ridge

d) Pacific - Antractica Ridge

Question : 47 [UP (Pre) 2015]

Which of the following rivers crosses the Equator twice?

a) Amazon

b) Nil

c) Zaire

d) Niger

Question : 48

The biggest island of the Indian Ocean is

a) Sumatra

b) Lakshadweep

c) Maldives

d) Madagascar

Question : 49

Tsunamis are mainly produced by

a) Tides

b) Cyclones

c) Subaerial earthquakes

d) Submarine earthquakes

Question : 50 [UPPCS (Pre) 1995]

The highest salinity is found in

a) Lake Van in Turkey

b) Great Salt Lake in U.S.A.

c) Dead Sea

d) Red Sea