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The jet is opened or closed by ___________

(a) Cup

(b) Valve rod

(c) Stout wire

(d) Screw

This question was posed to me by my college professor while I was bunking the class.

Asked question is from Viscosity and Viscosity Index topic in section Lubricants of Applied Chemistry

1 Answer

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Best answer
Correct answer is (b) Valve rod

Best explanation: The jet of the redwood viscometer is opened or close by using the valve rod. The lid of the cup is provided with the spirit level for the vertical levelling of the jet.

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