Question

Property of petroleum causes to form a layer in water

Answer 1

HERE IS UR ANS MATE


PROPERTY THAT CAUSES TO FORMS A LAYER IN WATER IS THAT THE DENCITY


THE SUBSTANCE WHICH HAS LOWER DENCITY MOVES UPWARD AND THE SUBSTANCE WITH LOWER DENCITY MOVES DOWNWARD


HOPE IT HELPS U



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Answer 2

If we pour petroleum in water we find that petroleum had formed a layer above water.

This is possible only beacuse petroleum have less density than that of water. So, it floats on water in a layer.