Question

*What causes thermos flask not to conduct or convey heat?*

1️⃣ Vacuum
2️⃣ Glass tube
3️⃣ Jar
4️⃣ Rubber​

Answer 1

Answer:

p.followme

Explanation:

The materials used to make the thermos flask, namely, glass, cork and rubber between the flask and the container, are all bad conductors of heat. They don't allow the heat to flow out of the flask by conduction or convection. The insulating stopper or cork at the top minimises heat loss by convection.

Answer 2

Answer:

vaccum

Explanation:

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