State the principal features of a thermos flask

      

State the principal features of a thermos flask.

  

Answers

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(i) The vacuum between the double walls
(ii) The two interior walls coated with silver
(iii) Insulating cork supports (anti-shock pads)
(iv) Insulating cork stopper at the top.

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raphael answered the question on October 11, 2018 at 05:49

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