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The energizer in pack carburizing makes up ________ of the total composition.

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The energizer in pack carburizing makes up ________ of the total composition.

(a) 10%

(b) 25%

(c) 40%

(d) 80%

This question was addressed to me in class test.

This question is from Carburizing in division Heat Treatment of Engineering Material & Metallurgy

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Correct choice is (c) 40%

To elaborate: The carburizing mixture contains a carbon-rich material along with an energizer making up 40% of the total composition. The energizer is composed of soda ash and barium carbonate. It is used to accelerate the carburizing process.

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