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Chemistry Questions and Answers

General Science
85. The galvanized iron pipes are coated with
 
  • A. lead
  • B. zinc
  • C. copper
  • D. tin
 
 
86. The commonly used refrigerant in fridges is
 
  • A. ammonia
  • B. liquid nitrogen
  • C. rain
  • D. cold wave
 
87. Which one of the following is an explosive?
 
  • A. benzene hexachloride
  • B. trinitro toluene
  • C. tetraethy lead
  • D. polyvinyl chloride
 
88. Ammonium hydroxide is a
 
  • A. strong alkali
  • B. weak alkali
  • C. neutral compound
  • D. none of these