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Who proposed first atomic theory ?

  • E.Rutherford
  • De Broglie
  • John Dalton
  • D.I.Mendeleef
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1. What is hottest part of the gas flame is called ?

  • blue zone
  • luminous zone
  • dark zone
  • non-luminous zone

2. Human bone does not contain

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  • carbon
  • oxygen
  • phosphorous

3. Aspirin is

  • acetyl salicylic acid
  • sodium salicylate
  • methyl salicylate
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