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The ratio of Ethylene glycol and Water in the coolant is ______

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in Automotive Engine Design by (137k points)
The ratio of Ethylene glycol and Water in the coolant is ______

(a) 50:50

(b) 10:90

(c) 30:70

(d) 20:80

I have been asked this question during a job interview.

I would like to ask this question from Coolants in chapter Cooling System of Automotive Engine Design

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Right option is (a) 50:50

The explanation: Ethylene glycol keeps hoses and seals smooth and raises the coolant’s boiling point. The ratio of Ethylene glycol in water is 50:50 as it must be in balance for the evaporation of water when the engine temperature increases.

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