Q.

In which of the following, all the three are macronutrient

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a

Boron, zinc, mangnese

b

Iron, copper, zinc

c

Nitrogen, magnesium, calcium

d

Copper, iron, chlorine

answer is A.

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Detailed Solution

The macronutrients include carbon, hydrogen, oxygen, nitrogen, phosphorous, sulphur, potassium, calcium and magnesium and micronutrients includes  iron, manganese, copper, molybdenum, zinc, boron, chlorine and nickel.

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In which of the following, all the three are macronutrient