Class XI

Common cutlery is manufactured through electrolysis of
  1. Nickel
  2. Galvanized zinc
  3. Chromium
  4. Copper
 Incorrect option is: Anions...
  1. Are negatively charged
  2. Travel to anode during electrolysis
  3. Travel to cathode during electrolysis
  4. Along with a cation forms an ionic salt
Attractive forces between particles is weakest in
  1. Solids
  2. Liquids
  3. Gases
  4. All of these
 Filtration is useful when
  1. Only one solid is soluble
  2. Both solids are soluble
  3. Both solids are insoluble
  4. When both liquids are miscible
Upon reaction of carbonates with acids, product includes salt and
  1. H2(g)
  2. H2O
  3. CO
  4. CO2
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