1Name five natural materials used for cleansing.
2Why is reetha regarded as a soft natural soap? Write two ways in which it is used.
3What is peena? How does it help the hair?
4How is wood ash used as a cleaner? Why is it also useful in a garden?
5Why is lemon juice considered a good natural cleaner? Which metal does it clean especially well?
6Write any five uses of Sajiban.
7Why is Sajiban called an excellent source of biodiesel? About how much oil can be produced from 9 kg of Sajiban seeds?
8Compare the way reetha and wood ash remove dirt.
9Which natural cleansing materials can also be used as fertilizer, and why?