Question

Explain construction of a vacuum flask​

Answer 1

Explanation:

The vacuum flask consists of two vessels, placed one within the other and joined at the neck. The gap between the two flasks is partially evacuated of air, creating a partial-vacuum which reduces heat conduction or convection

Answer 2

Answer:

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The vacuum flask consists of two vessels, placed one within the other and joined at the neck. The gap between the two flasks is partially evacuated of air, creating a partial-vacuum which reduces heat conduction or convection.