Which of the salt present in water is harmful for cultivation purposes?
A) Sodium carbonate
B) Potassium sulphate
C) Calcium sulphate
D) none of these
Correct Answer:
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Q4: Which of the following statements is wrong?
A)The
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Q10: The width of dowel is, usually, kept
Q11: A device which ensures a constant discharge
Q12: The sodium carbonate lining consists of at
Q13: The degree of sinuosity is the ratio
Q14: The excapes must lead the surplus water
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