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Question

Regarding the assertion and reason, select the right option.
Assertion: Compost is formed after decay of vegetable matter and organic refuse.
Reason: Green manure is a fertilizer consisting of growing plants that are ploughed back into the soil.
  1. Assertion is true but the reason is false
  2. Both the assertion and reason are true and the reason is the correct explanation for the assertion.
  3. Both the assertion and reason are true but the assertion is not the correct explanation of the reason.
  4. Both the assertion and reason are false.


Solution

The correct option is C Both the assertion and reason are true but the assertion is not the correct explanation of the reason.

Compost is a prepared mixture made of rotting vegetable matter and manure. Enriched composited manure is made by dumping all kinds of plant matter including garbage of vegetable markets and other organic refuse in heaps interspersed by thin sprinkling of chemical fertilizers like ammonium sulphate, superphosphate, sodium nitrate, lime, etc. It requires 6 months of preparation to get manure. Green manure is prepared from young, green crop plants by ploughing them back into the soil. Usually young leguminous crops are used for green manuring because they also increase the nitrogen fertility of the soil. The plants are slowly converted into manure through the activity of microorganisms.

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