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What is the efflux of the redwood viscometer no2?

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What is the efflux of the redwood viscometer no2?

(a) 2000

(b) 20000

(c) 100

(d) 200

This question was posed to me in a national level competition.

This key question is from Viscosity and Viscosity Index topic in chapter Lubricants of Applied Chemistry

1 Answer

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Right choice is (d) 200

To explain: The efflux of the redwood viscometer no2 is 200 seconds or less. Its jet for the outflow of the oil is having larger diameter. We can find the relative viscosities of the liquids using the redwood viscometer.

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