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The additives which are added to lower the Freezing point of the coolant is ______

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The additives which are added to lower the Freezing point of the coolant is ______

(a) anti- Knocking Agent

(b) temperature controller

(c) anti freezer

(d) isomers

This question was addressed to me in an online interview.

This interesting question is from Coolants in portion Cooling System of Automotive Engine Design

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The correct option is (c) anti freezer

Explanation: The Anti-Freezer additive lowers the freezing point of water which helps when the temperatures fall very low. Even for hot climates, the use of antifreeze has the incidental advantage that the boiling point of the cooling water is raised.

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