World Geography
The main tributaries of Indus river system are

the Jhelum, the Chenab , the Ravi
None of these
both (a) and (b)
the Beas, the Sutlej

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World Geography
What are secondary mineral deposits formed in caves called?

Speleothems
Pyroclastic debris
Ejecta Blanket
Speleogenesis

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

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