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The cylindrical vessel will be around the oil cup which serves as a water bath made up of __________

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The cylindrical vessel will be around the oil cup which serves as a water bath made up of __________

(a) Brass

(b) Chromium

(c) Copper

(d) Aluminium

This question was posed to me in a job interview.

My doubt stems from Viscosity and Viscosity Index topic in section Lubricants of Applied Chemistry

1 Answer

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Correct answer is (c) Copper

Explanation: The oil cup is surrounded by a cylindrical vessel and it acts as a water bath that is made up of the copper. It is provided by a tap. The tap is used for emptying the vessel by draining the water present in it.

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