A. Solar System
B. Revolution of Earth
C. Photo Electric Cell
D. None of above
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A. Edison
B. Berliner
C. Waterman
D. None of above
A. Science of Teeth
B. Science of coins
C. Study of Bones
D. None of above
A. Conspicuous writing
B. Drawing Maps
C. Secret codes
D. None of above
A. In car
B. Buses
C. U. boats
D. None of above
A. Ship
B. An Aircraft for emergency
C. Both a & b
D. None of above
A. Seismometer
B. Ammeter
C. Geiger Counter
D. None of above
A. A boat is used in emergency on a ship
B. For flying purposes
C. Swim across river
D. None of above
A. Heart Beat
B. Vibration of Lungs
C. Examination of Abdomen
D. None of above
A. Electrical energy in Mechanical
B. Mechanical energy into Electrical
C. Potential energy into Mechanical
D. None of above
