GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 099

GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 099

981). The energy generation in sun and stars is mainly due to
A). fission of heavy nucleus
B). fusion of light nuclei
C). fusion of heavy nuclei
D). chemical reaction

Answer: fusion of light nuclei


   
982). Mercury is used in thermometers because it
A). is heavy
B). is a liquid
C). expands uniformly
D). is a metal

Answer: expands uniformly


   
983). Indian scientist who received the Nobel prize
A). Sir C.V. Raman
B). s. Ramanujam
C). H.J. Bhava
D). Sir. J.C. Bose

Answer: Sir C.V. Raman


   
984). The density of water maximum
A). 0°C
B). 4°C
C). 100°C
D). -10°C

Answer: 4°C


   
985). To convert centigrade temperature temperature to Kelvin temperature we must add
A). 723°
B). 273°
C). 373°
D). 180°

Answer: 273°



986). Sound waves are
A). electrical waves
B). magnetic waves
C). mechanical waves
D). micro waves

Answer: mechanical waves


   
987). Radio activity is
A). affected by temperature
B). affected by pressure
C). affected by electric and magnetic fields
D). not affected by these factors

Answer: not affected by these factors


   
988). Traffic signals are painted with ______ paints
A). normal
B). fluorescent
C). acrylic
D). light reflecting

Answer: light reflecting


   
989). Radio cobalt is used
A). to study the phosphorous in take by plants
B). in the treatment of cancer
C). to measure the thickness of paper
D). to study the atomic structure

Answer: in the treatment of cancer


   
990). According to Stefan's law, the total energy emitted by black body is proportional to
A). T
B). T^2
C). T^3
D). T^4

Answer: T^4