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Chemistry Questions and Answers

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211. Which one of the following contains maximum percentage of nitrogen by mass?
 
  • A. urea
  • B. ammonium cyanide
  • C. ammonium carbonate
  • D. ammonium nitrate
 
212. Another name for mercurous chloride is
 
  • A. amalgam
  • B. plaster of paris
  • C. calomel
  • D. blue vitriol
 
 
213. The foul smell or rancid butter is due to
 
  • A. phthalic acid
  • B. butyric acid
  • C. oxalic acid
  • D. amino acetic acid
 
214. The hardest variety of carbon is
 
  • A. coal
  • B. charcoal
  • C. diamond
  • D. leeco
 
215. Bleaching powder contains
 
  • A. nitrogen
  • B. chlorine
  • C. bromine
  • D. iodine