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MCQ 146: Amine group reacts in the excess of acid to produce:

  1. ammonia
  2. ammonium salts
  3. ammonium ions
  4. nitrogen

MCQ 147: Silicon is classified as:

  1. semi-metal only
  2. metalloid only
  3. non-metals
  4. semi-metal and metalloid

MCQ 148: Many ionic compounds have some covalent ability due to:

  1. ion polarization
  2. charge polarization
  3. proton polarization
  4. electron polarization

MCQ 149: One of three p-orbitals on nitrogen atom overlaps with pi bonding system in 'benzene ring' in the molecule of:

  1. phenyl amine
  2. ethylamine
  3. propylamine
  4. methylamine

MCQ 150: Electronegativity of oxygen is equal to:

  1. 4.04
  2. 3.44
  3. 4.5
  4. 2.2

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