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

  • Boron
  • Carbon
  • Argon
  • Mercury
Similar Questions :

1. The substance that contains the maximum amount of nitrogen is ?

  • Ammonium Sulphate
  • Urea
  • Ammonium Nitrate
  • Ammonium Chloride

2. Which gas is used in fire extinguishers ?

  • Carbon dioxide
  • Nitrogen oxide
  • Carbon monoxide
  • Sulpher dioxide

3. Mass number of a nucleus is :

  • the sum of the number of protons and neutrons present in the nucleus
  • always more than the atomic weight
  • always less than its atomic number
  • None of above

4. What is the hardest form of carbon ?

  • coke
  • graphite
  • charcoal
  • diamond

5. The acid generally stored in batteries is

  • Nitric Acid
  • Hydrochloric Acid
  • Sulphuric Acid
  • Acetic Acid
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