Write FACT if the statement is correct and BLUFF if it is wrong. Write your correct answer on a separate sheet of paper.

________1. Freezing enables us to store and preserve food.
________2. All chemical changes are useful to environment.
________3. Cutting a piece of cloth to be made into a handkerchief is useful. ________4. There is no need for us to apply the 5Rs of waste management. ________5. Useful changes in materials occur in our environment.
________6. Fish sauce and fish paste are made with the help of molds.