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10 Kg of oil is burnt in a container and taken off from the container if 1% of oil remains on the container wall, how much oil is taken off?

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10 Kg of oil is burnt in a container and taken off from the container if 1% of oil remains on the container wall, how much oil is taken off?

(a) 8.9 Kg

(b) 9 Kg

(c) 9.9 Kg

(d) 10 Kg

This question was posed to me in class test.

I would like to ask this question from Material Balances for Batch and Semi-Batch Processes in portion Introduction to Material Balances of Basic Chemical Engineering

1 Answer

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Correct choice is (c) 9.9 Kg

For explanation: Amount of oil taken off = 10*(1 – 1/100) = 9.9 Kg.

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