In a good thermos flask, the main cause of heat loss is? - SchoolNGR

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In a good thermos flask, the main cause of heat loss is?

In a good thermos flask, the main cause of heat loss is?

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Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE

A Conduction through the cork
B The plastic base of the thermos flask
C The silvered walls and shiny metals
D The outer cover or jacker

Correct Answer: Option A

Explanation:
Since the cork is in contact with the walls of the flask, little conduction takes place

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