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Human bone does not contain

  • calcium
  • carbon
  • oxygen
  • phosphorous
Similar Questions :

1. Which of the following elements behave chemically both as a metal and a non metal?

  • Boron
  • Carbon
  • Argon
  • Mercury

2. The term PVC used in the plastic industry stands for

  • polyvinyl chloride
  • polyvinyl carbobate
  • phosphor vanadiu chloride
  • phosphavinyl chloride

3. Which of the following gas is used in cigarette lighters ?

  • Butane
  • Propane
  • Methane
  • Ethane

4. pH of blood is ?

  • 10.4
  • 9
  • 7.4
  • 4

5. What is laughing gas ?

  • nitrous oxide
  • nitric oxide
  • nitrogen oxide
  • nitrogen peroxide
Read more from - Chemistry Questions Answers
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