In the following question, out of the given four alternatives, select the one which best expresses the meaning of the given word.
Defile
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Friction is caused by the ______________ on the two surfaces in contact.
Which of the following is false with reference to a photo-voltaic cell?
A sound wave has a frequency of 4 kHz and a wavelength of 40 cm. The time taken by the sound wave to travel a distance of 3.2 km is
The boundary between Earth's crust and mantle is _____.
Minamata disease is a nervous disorder caused by eating fish, polluted with _____
Mangifera indica is the scientific name of
When was "Pradhan Mantri Mudra Yojana" launched?