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Physics Questions and Answers

General Science
41. The filament of an electric bulb is made of
 
  • A. aluminium
  • B. carbon
  • C. tungsten
  • D. platinum
 
 
42. Melting point of ice is
 
  • A. -7°C
  • B. 10°C
  • C. 1°C
  • D. 0°C
 
43. Which one of the following involves two change of state?
 
  • A. evaporation
  • B. condensation
  • C. filtration
  • D. distillation
 
44. Which substance is used to make rubber strong?
 
  • A. sulphur
  • B. sponge
  • C. chlorine
  • D. iron