GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 077

GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 077

761). Which instrument can be used to determine the thickness of a piece of paper?
A). Vernier callipers
B). Screw gauge
C). Spherometer
D). Spectrometer

Answer: Screw gauge


   
762). Which condition is favourable for the formation of dew ?
A). cloudy sky
B). low temperature during day and night
C). hot day followed by a cold night
D). the presence of sea near by

Answer: hot day followed by a cold night


   
763). Doppler effect in sound produces apparent change in
A). amplitude
B). frequency
C). wave length
D). intensity

Answer: frequency


   
764). Boyle's law states the relationship between
A). pressure and temperature
B). pressure and volume
C). volume and temperature
D). pressure and density

Answer: pressure and volume


   
765). Which one of the following processes is used to purify a soluble solid?
A). evaporation
B). crystallisation
C). condensation
D). distillation

Answer: crystallisation



766). Which one of the following properties of a liquid does not affect its rate of evaporation?
A). volume
B). surface area
C). temperature
D). boiling point

Answer: boiling point


   
767). Which one of the following involves two changes of state?
A). evaporation
B). condensation
C). distillation
D). filtration

Answer: distillation


   
768). The function of the thermostat in a refrigerator is
A). to heat up the refrigerator
B). to regulate the temperature
C). to start the refrigerator
D). to stop the refrigerator

Answer: to regulate the temperature


   
769). Small bodies from interplanetary Space when enter into our atmosphere become luminous. These are called
A). asteroids
B). meteors
C). stones
D). neutron stars

Answer: meteors


   
770). The newly discovered high temperature super conductors are
A). inorganic polymers
B). liquid nitrogen
C). metal alloys
D). ceramic oxides

Answer: inorganic polymers