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I have noticed that when I take some eatable kept in a glass container, out of the fridge, when they are already at a low temperature (around 3-4 degrees) and then try to heat it up in a microwave then the container first cracks and then breaks down. On the other hand, if the eatable and the container were already at the room temperature and then if I try to heat them up in the microwave then the container doesn't break down.

What is the reason behind this phenomenon?

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    $\begingroup$ Depends on the thermal shock resistance of the material. Good glass dishes won't do that, cheap untempered dishes will. $\endgroup$ – Jon Custer Apr 14 at 14:03

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