In the armature and the field magnet of a generator; the stationary part is the :

 Glucose test is conducted by using the solution :

The change of frequency experienced by the receiver either because of the relative motion of the source or receiver or both :

Ethanol mixed with methanol as the poisonous substance is called :

 Light rays spread everywhere due to the irregular and repeated reflection known as :

Select the ore of Aluminium given below :