@aryabhata all three is most likely. Many airports use body wave millimetre scan For narcotics detection. It is based on radar principle
@aryabhata you can give it a shot bro, I marked all three too. After last year, not taking answer key of institute at face value
@aryabhata there is also another question where I feel the official answer key might vary. According to RBI website primary dealers can participate in liquidity adjustment facility. And there are 7 primary dealers recognised by rbi as NBFCs. So that statement also sounds too ambiguous
