Ionic bond is between two atoms is: Complete transfer of valence electron Half transfer of valence electron Complete transfer of electron and proton None of these
During combustion of petrol in car engine, energy is converted in: Chemical Mechanical Electrical None of these
Radio waves broadcasted by Radio Broadcasting is reflected back by: Ionosphere Stratosphere Mesosphere None of these
Time interval to complete one revolution of earth around its own axis is: 22 hours 23 hours 24 hours 23 hours 56 minutes
