thermos block consists of a double walled glass vessels in the space between them filled with air which is a bad conductor of heat true or false
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Answer:True, it creates a vacuum.
Explanation:A thermos is a bottle with a double-walled container inside of it. The air between the two walls is sucked out during construction, creating a vacuum. Instead of containing some kind of heating element to keep hot things hot, a thermos is designed to keep hot things hot by not allowing heat to escape.
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