A thermo flask is a household item that is used to keep things warm or – McqOptions

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1.	A thermo flask is a household item that is used to keep things warm or cold support for a long time. What is the use of silvered wall in thermo flask?
A.	To reduce the flow of heat by conduction.
B.	To increase the temperature by convection.
C.	To reflect the heat back to reduce radiation,
D.	To prevent the glass vessel from breaking.
Answer» D. To prevent the glass vessel from breaking.

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