hydrosphere & oceanography section 1 Practice Questions Answers Test with Solutions & More Shortcuts

Question : 21 [PSC (Pre) 2019]

Which strait connects Red Sea and Indian Ocean?

a) Malacca

b) Bosphorus

c) Bab-el-Mandeb

d) Hormuz

Question : 22

A new type of El Nino called El Nino Modoki appeared in the news. In this context, consider the following statements:

1. Normal El Nino forms in the Central Pacific Ocean whereas El Nino Modoki forms in Eastern Pacific Ocean
2. Normal El Nino results in diminished hurricanes in the Atlantic Ocean but El Nino Modoki results in a greater number of hurricanes with greater frequency.

a) Neither 1 nor 2

b) Both 1 and 2

c) 1 only

d) 2 only

Question : 23

Which one of the following statements is not true about the subsidence theory of Coral reefs?

a) Reef building starts from submarine plate form.

b) Fringing reef, barrier reef and atolls are successive stages of coral reef development.

c) The theory has been postulated by Charles Darwin.

d) According to the theory coral polyps grow both in shallow and deep oceanic waters.

Question : 24

Dolphin Challenger Ridge is located in

a) Indian Ocean

b) Arctic Ocean

c) Atlantic Ocean

d) Pacific Ocean

Question : 25 [BPSC (Pre) 2000]

Gulf stream is

a) a surface wind

b) another name of Jet Stream

c) a river in the gulf

d) an oceanic current