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Which of the following is not a trace element?

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+1 vote
in Fermentation Technology by (72.1k points)
Which of the following is not a trace element?

(a) Ag

(b) Al

(c) Ni

(d) He

I had been asked this question in a job interview.

I'm obligated to ask this question of Media for Industrial Fermentations in portion Media for Industrial Fermentations of Fermentation Technology

1 Answer

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Best answer
Correct option is (d) He

Explanation: He is not a trace element as it is a noble gas. The trace elements include Ag, Al, Ni, Si, Sn, etc. which are required in small amounts to microorganism.

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