Class XI

 Subtracting proton number from nucleon number,
  1. Number of electrons can be obtained
  2. Number of neutrons can be obtained
  3. Nature of bonding can be determined
  4. Polarization can be determined
Most of organic solvents are
  1. Strong electrolyte
  2. Non-electrolyte
  3. Weak electrolyte
  4. Poor insulators
Metal core in power cable is normally made up of
  1. Steel
  2. Aluminum
  3. Nickel
  4. Both A and B
 People requiring an x-ray of stomach are given a porridge of
  1. PbSO4
  2. BaSO4
  3. Na2CO3
  4. K2CO3
 In plentiful supply of oxygen or air, burning of carbon gives off
  1. Carbon monoxide
  2. Carbon dioxide
  3. H3O
  4. H2CO3
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