Question

draw a labelled diagram if thermas flask​

Answer 1

Answer:

here is your diagram

it will help you

Answer 2

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${\huge{\star{\black{\bold{Thermos flask}}}}}{\huge{\star}}$

The main purpose of a thermos flask is to prevent the flow of heat to and from the flask. The inner chamber of the flask is made up of glass, which is a poor conductor of heat.

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