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BSF - Border Security Force exam study material free download pdf free download | Aptitude tricks and tips, BSF - Border Security Force exam objective type questions model question paper with answer pdf free download

In microphone, transformation of energy takes place from
A. Sound into electrical energy
B. Electrical into sound energy
C. Sound into mechanical energy
D. Mechanical into sound energy

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Fuel used in a nuclear reactor is
A. Uranium
B. Heavy water
C. Barium
D. Cadmium

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The heater element in an electric iron is made of
A. Nichrome
B. Tungsten
C. Copper
D. Iron

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Range of Television Broadcasting is confined to a limited distance because
A. Long waves are used
B. Short waves are absorbed by atmosphere
C. Energy of the waves is dissipated
D. Earth is spherical in shape

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Dialysis is used for a patient suffering from?
A. Kidney trouble
B. Liver trouble
C. Lung trouble
D. Heart trouble

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Green colour of plants is due to the presence of
A. Chlorophyll
B. Sugar
C. Mitochondria
D. Xylem

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