Q. If a potato is placed on a pure paper plate which is white and unprinted and put in a microwave oven,the potato heats up but the paper plate does not. This is because: 

1. Potato is mainly made up of starch where as paper is mainly made up of cellulose.
2. Potato transmits microwaves where as paper reflects microwaves .
3. Potato contains water where as paper does not contain water.
4. Potato is a fresh organic material where as paper is a dead organic material.