Class VIII

A common sedimentary rock which is formed from plant material is
  1. coal
  2. natural oil
  3. diamond
  4. marble
In deserts there is existence of extreme in day and night
  1. temperatures
  2. erosion
  3. pressure
  4. cycles
Acid and carbonates react together to form
  1. oxygen
  2. nitrogen
  3. carbon dioxide
  4. Sulphur dioxide
Top of mountains at night time are
  1. hot
  2. cold
  3. mild
  4. temperate
While transportation sediments are sorted according to their
  1. size
  2. volume
  3. color
  4. chemical properties
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