Question

Why is an oven made of double walls with space in filled with cork?

Answer 1

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Cork is filled in between two walls of oven because cork is an insulator .


It doesn't allow heat to pass through it and so heat remains inside oven and it becomes more easier to bake .


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Answer 2

$\huge\orange{ASSALAMUALAIKUM!}$

An oven is made of double walls and the space between them is filled with wool, cork etc. ... They prevent the heat of the oven to escape. Cooking utensils and pans are made of metals such as copper, brass, steel etc. The reason is that the metals are conductors of heat and so they heat up rapidly.

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