1. What makes the basis of sorting materials into groups?
2. Which one will show a metallic lustre?
3. An oily thin paper sheet will be
4. Purpose of sorting material into groups is
5. Which is a set of transparent materials?
6. Choose the opaque object from the following:
7. Which one of the following is not soluble in water?
8. Which object shines?
9. Which of the following has reddish brown colour?
10. Which one of the following is insoluble in water?