Question

As you can see in Figure I – freezing and boiling point of ethylene glycol in water, the boiling point for aqueous ethylene glycol increases with increasing ethylene glycol percentage in water. Therefore, the use of ethylene glycol not only depresses the freezing point, but also elevates the boiling point, so that the operating range for the heat transfer fluid is broadened on both ends of the temperature scale. Which statement BEST describes the role of ethylene glycol as an additive in automobile radiators?

Responses
A Ethylene glycol is more effective as a coolant.
B Ethylene glycol is more effective as antifreeze.
C Ethylene glycol is equally effective as a coolant and as an antifreeze.
D Ethylene glycol has a greater temperature range as a coolant than as an antifreeze.
question #8

Answer 1

Ethylene glycol is more effective as antifreeze. Option B is correct.

According to the text, ethylene glycol works well to raise the boiling point and lower the freezing point (making it an efficient antifreeze).

Nonetheless, the most true statement is that ethylene glycol works better as an antifreeze because the paragraph concentrates on how it helps the heat transfer fluid operate across a wider temperature range.

So, Ethylene glycol is more effective as antifreeze.

Therefore, Option B is correct.