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Question

Calcium superphosphate, sodium nitrate and ammonium sulphate are used:
  1. in refrigerators
  2. air conditioners
  3. invertors
  4. to increase the yield of fruits, vegetables and other crops

A
to increase the yield of fruits, vegetables and other crops
B
air conditioners
C
in refrigerators
D
invertors
Solution
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Calcium superphosphate, sodium nitrate and ammonium sulphate can increase the yield of fruits, vegetables and other crops. They are used as fertiliser in agriculture.

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