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

  • Boron
  • Carbon
  • Argon
  • Mercury
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1. The most abundant element in the earth's crust is ?

  • Aluminium
  • Nitrogen
  • Silicon
  • Oxygen

2. Sugars are converted in the liver into

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  • None of above

3. Which is also called Stranger Gas ?

  • Xenon
  • Neon
  • Argon
  • Nitrous oxide

4. pH of blood is ?

  • 10.4
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  • 7.4
  • 4

5. The ore which is found in abundance in India is

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  • bauxite
  • magnetite
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