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The oil cup is made up of _________

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The oil cup is made up of _________

(a) Brass

(b) Copper

(c) Silver

(d) Chromium

This question was posed to me by my school principal while I was bunking the class.

I would like to ask this question from Viscosity and Viscosity Index topic in chapter Lubricants of Applied Chemistry

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Right option is (a) Brass

The explanation is: The oil cup is one of the parts of the redwood viscometer. It is made up of brass. It is open at upper end. Its base is fitted with an agate jet, with the bore of diameter 1.62mm and internal length 10mm.

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