How do I decide that any oil, butter or ghee is saturated or unsaturated?

How do I decide that any oil, butter or ghee is saturated or unsaturated?

Dr. K K Aggarwal, President Heart Care Foundation of India and Group Editor in Chief MEDtalks, discusses about saturated and unsaturated butter in this video. Any fat liquid at room temperature will be unsaturated and any fat solid at room temperature is saturated. Whatever is solid will also get solid inside the body.