1. Optic fibres are mainly used for which of the following ?


2. Detergents used for cleaning clothes and utensils contain


3. What are soaps ?


4. Which one of the following is the petroleum wax ?


5. Paper is manufactured by


6. Which of the following materials are used for preparing blue-black ink


7. Wood is the main raw material for the manufacture of


8. which of the following is commonly called a polyamide


9. The type of glass used in making lenses and prisms is


10. which type of fire extinguisher is used for petroleum fire ?


Question 1 of 10