Class X

. Which of the is more reactive?
  1. Hg
  2. Al
  3. Ag
  4. Ca
. Bauxite is an ore of which metal
  1. iron
  2. aluminium
  3. copper
  4. tin
Haematite is an ore of
  1. iron
  2. aluminium
  3. copper
  4. ) tin
Which non-metallic element is in liquid form ?
  1. Carbon
  2. Hydrogen
  3. Bromine
  4. Phosphorus
Which of the following methods is suitable for preventing an iron frying pan from rusting?
  1. Applying grease
  2. Applying paint
  3. Applying a coating of zinc
  4. All of the above.
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