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What is the composition of Globar rod which is used as a source in Mid IR spectroscopy?

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What is the composition of Globar rod which is used as a source in Mid IR spectroscopy?

(a) Silicon carbide

(b) Silver chloride

(c) Silicon dioxide

(d) Silver carbide

I have been asked this question in examination.

My question is from Instrumentation of IR topic in division Colorimetry and Spectrometry of Analytical Instrumentation

1 Answer

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The correct answer is (a) Silicon carbide

Explanation: Globar is a silicon carbide rod. It is 5mm in diameter and 50mm long.

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