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Chemistry Questions and Answers

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206. When quick lime is added to water
 
  • A. heat is absorbed
  • B. heat is liberated
  • C. temperature decreases
  • D. none of these
 
207. Aluminium oxide is a/an
 
  • A. acidic oxide
  • B. basic oxide
  • C. neutral oxide
  • D. amphoteric oxide
 
 
208. Soda water is a solution of
 
  • A. liquid in gas
  • B. gas in liquid
  • C. solid in solid
  • D. solid in water
 
209. In mirrors the back surface is cotted with a thin layer of
 
  • A. silver
  • B. mercury
  • C. red oxide
  • D. silver nitrate
 
210. Charcoal is
 
  • A. amorphous
  • B. crystalline
  • C. hygroscopic
  • D. none of these