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

flood controls and making rivers navigable
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

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World Geography
The periodic rise and fall of the sea level on the earth, gives rise to tides. This is related to

None of these
the position of the moon with reference to the earth and the gravitational pull exerted mainly by the moon and partly by the sun
infrared rays from the sun
ultraviolet rays from the sun

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World Geography
Which among the following statements is/are correct about the Thermosphere?It lies upto an altitude of 80 km from the earth’s surface.It contains electrically charged particles known as ions.The temperature here starts increasing with heights.The International Space Station and other satellites orbit in this layer.Select the correct code from the options given below:

Only 1, 3 & 4
Only 3 & 4
1, 2, 3 & 4
Only 2, 3 & 4

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