Class XI

 Difficulty of discharge is lowest in
  1. Magnesium ions
  2. Zinc ions
  3. Lead ions
  4. Hydrogen ions
Position of metals in reactivity series does not determine the
  1. Rate of polarization
  2. Duration light bulb will glow
  3. Brightness of light
  4. Nature of bonding
Most reactive metal in given series is
  1. Zinc
  2. Tin
  3. Iead
  4. Iron
Compounds are not formed by elements
  1. Which are non-metals
  2. Which are metals
  3. Which have zero valency
  4. Which have radicals
After centrifugation, sublimate
  1. Dissolves completely
  2. Remain suspended in liquid
  3. Settles at bottom
  4. Depends upon pH of sublimate
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