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# Which of the following is not an essential micro-nutrient.

$\begin{array}{1 1}(A)\;\text{Boron}\\(B)\;\text{Nickel}\\(C)\;\text{Manganese}\\(D)\;\text{Molybdenum}\end{array}$

Can you answer this question?

Nickel is not an essential micro-nutrient
Hence (B) is the correct answer.
answered Apr 4, 2014