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Describe the construction of a thermo flask with the help of a neat diagram and label it.
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Explain the design of a thermos flask.
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My thermos flask worked fine for a few months until it suddenly stopped keeping the heat in entirely. How do vacuum flasks stop working? - Quora
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explain the working of thermos flask with a well labelled diagram - Brainly.in
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Explain the structure and function of thermos flask, with the help of neat labelled diagram - Brainly.in
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