Why oil is poured to calm the sea?

Molten cast iron is poured into moulds to make different shapes.Which special-ity of cast iron is based for it?

Vegetable oil is converted into vanaspati fat by …………………….. process.

When cooking oil is heated in a frying pan, the oil moves around the pan more easily when it is hot. The main reason for this is that with rise in temperature, there is a decrease in