Question

In baking a cake, heat is transferred when

I. Molecules move from a warm area to a cooler one
II. Hot air rises and cooler air falls
III. Warm liquids rise and cooler liquids fall
(A) I and II ONLY
(B) I and III ONLY
(C) II and III ONLY
(D) I, II and III

Answer 1

In an oven, the hot air flows by natural or forced convection while heat is distributed from the heating element by radiation. During baking process, heat is also transfer by conduction from the baking metal container to the baked product.

Answer 2

Answer:

In baking a cake, heat is transferred when

I and III only

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