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Subject :NSO    Class : Class 7

In punjab, farmers used chemical fertilisers excessively for the better yield of crops. However, after a few seasons they found that the yield of crops had decreased. Which of the following should they use to improve the quality of the soil?

A Organic matter
B Lemon juice
C Slaked lime
D Common salt


Ans 1:

Class : Class 3
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Ans 2:

Class : Class 3
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Ans 3:

Class : Class 8
NITROGEN , PHOSPHORUS, POTASSIUM ARE EXXESIVELY PRESENT WHICH CAN CREATE THE SOIL ACIDIC . THAT IS WHY ANSWER IS "C"

Ans 4:

Class : Class 8
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Ans 5:

Class : Class 3
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