Q. Which kind of polarity do fat-soluble and water-soluble substances respectively have?
Ans.
Water-soluble substances are behave as polar molecules, i.e., they have electrically charged regions. These molecules get the description "water-soluble" due to they are soluble in water, a polar molecule too.
Fat-soluble substances are behave as non-polar molecules, i.e., they are electrically neutral. They obtain the description "fat - soluble" because they dissolve other non-polar substances.