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Physics Questions and Answers

General Science
185. By centifugral action, we can separate particles of different
 
  • A. sizes
  • B. masses
  • C. colours
  • D. densities
 
 
186. An aneroid barometer uses
 
  • A. mercury
  • B. alcohol
  • C. distilled water
  • D. does not use any liquid
 
187. The difference between musical sound noise is due to
 
  • A. intensity
  • B. pitch
  • C. wavelength
  • D. musical instrument
 
188. Dry ice is
 
  • A. solid nitrogen
  • B. solid methane
  • C. solid ammonia
  • D. solid carbon