11. Nobel oil' is the name of which one of the following explosives?
12. Which one of the following elements is used in the manufacturing offertilisers?
13. Which one of the following types of glass can cut off ultraviolet rays?
14. Which of the following produces highest amount of energy upon oxidation?
15. Saccharin is made up of
16. Which of the following is used to remove the green colour from glass?
17. Match List-I with List-II and select the correct answer:
List-I
List-II
a. Morphine
1. Antiseptic
b. Sodium
2. Alloy
c. Boric acid
3. Analgesic
d. German silver
4. Kerosene oil
| List-I | List-II |
| a. Morphine | 1. Antiseptic |
| b. Sodium | 2. Alloy |
| c. Boric acid | 3. Analgesic |
| d. German silver | 4. Kerosene oil |
18. Detergents clean surfaces on the principle of
19. The chemical used in manufacturing of dynamite is
20. Which one of the following has the highest fuel value?
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