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Who is regarded as father of modern chemistry ?

  • Ruterford
  • Einstein
  • Lavoisier
  • C.V. Raman
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1. Nail polish remover contains ?

  • benzene
  • acetic acid
  • acetone
  • petroleum ether

2. Biogas majorly contains ?

  • Ethane
  • Methane
  • Hydrogen
  • CO

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

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

4. The metal used to recover copper from a solution of copper sulphate is ?

  • Na
  • Ag
  • Hg
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5. Alloys made with mercury as one metal are called ?

  • mixtures
  • emulsions
  • solders
  • amalgams
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  • Dorjey 9 years ago

    how it ispossible that group 2 element can form two covalent bonds when their electron are paired up???

    pardeep 8 years ago replied

    It contain empty p orbital due to that s orbital e unpaired and for covalent bond

    pardeep 8 years ago replied

    Due to presence vacant p orbital s orbital electrons unpaired and form covalent bond