Class VIII

Whose reactivity is highest among the following metals?
  1. Copper
  2. Potassium
  3. Iron
  4. Zinc
Which non-metal is a good conductor of electricity ? 
  1. Phosphorus 
  2. Sulphur 
  3. Graphite 
  4. Coal 
Iron can displace _ from its salt solution . 
  1. Zinc 
  2. Sodium 
  3. Potassium 
  4. Copper 
Desired characteristics can be obtained by :
  1. Both making alloys & combining different ratios of metals
  2. Making compounds of metals
  3. Combining different ratios of metals
  4. Making alloys
The liquid metal at room temperature
  1. Mercury
  2. Bromine
  3. sodium
  4. gold
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