Question

Why can't we use a cooking utensil made up of cardboard ??

Answer 1

we can't use a cooking utensils made up of cardboard because cardboard is made up of several layers of thin sheets as thin sheets are porous material water can easily enter through this sheets..so cooking utensils are not made up of cardboard

Answer 2

This is because cardboard is a good conductor of heat energy.so if we cook food in cardboard utensils, the cardboard will burn and turn into ashes.