World Geography
The magnetic field of earth, Magnetosphere expands to about

8000 km above the earth's surface
64,000 km above the earth's surface
None of these
9600 km above the earth's surface

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World Geography
Which winds are also known as Doctor winds?

Chinook
Loo
Sirocco
Harmattan

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World Geography
The sidereal month may be defined as

the period in which the moon completes an orbit around the earth
the period in which the moon completes an orbit around the Earth and returns to the same position in the sky
the period of rotation of moon
None of these

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