GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 075

GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 075

741). Printing for the blind was introduced by
A). Michael Faraday
B). Lousis Braille
C). Harvey
D). Carton

Answer: Lousis Braille

   
742). The filament of an electical bulb is made of
A). tungsten
B). aluminium
C). carbon
D). platinum

Answer: tungsten


   
743). The planet near to the sun
A). venus
B). jupiter
C). mercury
D). saturn

Answer: mercury


   
744). Crystal dynamics was invented by
A). Volta
B). Grahem bell
C). C.V. Raman
D). Napier

Answer: C.V. Raman


   
745). How do foodstuffs remain fresh in refrigerator?
A). through freezing
B). by discarding germs
C). by regulation of temperature
D). by preventing fermentation due to very low temperature

Answer: by preventing fermentation due to very low temperature

 



746). Television was invented by
A). J. L. Baird
B). Samuel Weston
C). Marconi
D). W. Shockley

Answer: J. L. Baird


   
747). The one used in the preparation of lenses and prisms
A). soda glass
B). flint glass
C). quartz glass
D). pyrex glass

Answer: flint glass


   
748). When the mass and velocity are doubled, the kinetic energy will
A). remain the same
B). increase twice
C). increase 6 times
D). increase 8 times

Answer: increase 8 times


   
749). Colour formation in thin films is due to
A). reflection
B). refraction
C). interference
D). diffraction

Answer: interference


   
750). The power of a lens is measured in
A). joule
B). candela
C). decibel
D). dioptre

Answer: dioptre