World Geography
The tide produced when the moon and the sun are at right angles to the earth, thus pulling in opposite directions, is called

ebb tide
diurnal tide
spring tide
neap tide

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World Geography
The main objective of multi-purpose river projects are

extension of irrigation facilities by constructing dams to store surplus water during the rainy seas
All of these
power generation by constructing hydro power stations
flood controls and making rivers navigable

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World Geography
Which among the following statements is not correct about Plunge pool?

They are often very deep, generally related to the height of fall and the volume of water,
It is a deep depression in a stream bed at the base of a waterfall
It is created by the erosional forces of cascading water
They occur at the mature stage of the river development

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