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The boiling point of ethylene glycol used in the coolant is ______Degree Centigrade(a) 290(b) 195(c) 200(d) 300I had been asked this question in an interview for internship.This intriguing question originated from Coolants in section Cooling System of Automotive Engine Design

Answer»

Right ANSWER is (B) 195

Easy EXPLANATION: The boiling point is the temperature at which the vapor pressure of a chemical equals atmospheric pressure. The boiling point of ethylene glycol is 195-degree Centigrade and used as coolant in automobiles. The higher boiling point indicates greater intermolecular force THEREFORE less vapor pressure.



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