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During metallurgical operations, n2 causes ___________

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During metallurgical operations, n2 causes ___________

(a) hardness to sample

(b) softness to sample

(c) moisture to sample

(d) heat to sample

I got this question in semester exam.

Asked question is from Analysis of Coal and Selection in portion Fuel Technologies of Applied Chemistry

1 Answer

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The correct answer is (a) hardness to sample

The explanation: During metallurgical processes, nitrogen causes hardness to the sample, but the presence of nitrogen does not affect the utility of the coal for great extent as it is present in small amounts.

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