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Chemistry Questions and Answers

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156. Rocket fuel is
 
  • A. oxygen and methane
  • B. oxygen
  • C. hydrazine and dinitrogen tetroxide
  • D. ozone
 
157. The water that does not produce good lather with soap is called
 
  • A. hard water
  • B. heavy water
  • C. polluted water
  • D. soft water
 
 
158. What is the chemical name of Green vitriol?
 
  • A. calcium carbonate
  • B. Iron sulphate
  • C. calcium phosphate
  • D. calcium cyanamide
 
159. The polymer of acetylene is
 
  • A. acetal
  • B. benzene
  • C. polythene
  • D. toluene
 
160. Calcium sulphate is known as
 
  • A. epsom salt
  • B. blue vitriol
  • C. potash alum
  • D. gypsum salt