Question

iii. A vacuum flask is able to keep a cold liquid cold because it
a. decreases the rate at which heat flows into the liquid.
b. decreases the rate at which heat flows out of the liquid.
c. increases the rate at which heat flows into the liquid.
d. increases the rate at which heat flows out of the liquid.​

Answer 1

Answer:

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Explanation:

The answer is [a] It decreases the rate at which heat flows into the liquid.

Here,This Question is related to Thermo dynamics, the word thermodynamics means to Equalize, so the air tries to cool down the temp of the liquid and make it equal to the temp of surroundings but the flask stops the temp change betn surrounding and liquid....

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