A microwave oven heats food primarily by causing which molecules within the food to vibrate rapidly?

Explanation

A microwave oven heats food by emitting microwaves that cause water molecules within the food to rapidly rotate and vibrate, generating heat through this molecular friction. Because water is present in most foods, this process heats them relatively quickly and efficiently from within, rather than heating primarily from the outside like a conventional oven. Foods with very little water content, such as dry crackers, therefore heat much more slowly in a microwave. Explore more Everyday Science MCQs on mcqstutor to keep practicing.