Class XI

Acid salts cannot be formed by
  1. Sulphuric acid
  2. Carbonic acid
  3. Hydrochloric acid
  4. Phosphoric acid
Isotopes of same element have
  1. Different number of neutrons
  2. Different masses
  3. Same protons and neutrons
  4. All of these
Consider equation: Fe+2(aq) + 2OH-(aq) → Fe(OH)2(s). precipitate of Iron(II) Hydroxide will be of
  1. Green color
  2. Blue color
  3. Brown color
  4. White color
Nitric acid reacts with copper to form
  1. Copper oxides
  2. Copper nitrate
  3. Both A and B
  4. None of Above
Valence electrons are used to get a clue of
  1. Group Number
  2. Shell Number
  3. Period Number
  4. Proton Number
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