World Geography
The main examples of Rabi crop are

rice, jowar, barley, wheat
wheat, barley, peas, rapeseed, mustard, grams
peas, maize, cotton and jute
All of these

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World Geography
Which among the following principle is used by Bats?

RADAR (Radio Detective & Ranging
law of diffraction
law of reflection
SONAR (Sound Navigation & Ranging

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