| 231. | natural rubber is a polymer of |
A. isoprene | |
B. styrene | |
C. Butane | |
D. ethylene |
| 232. | Which of the following is not a natural polymer? |
A. the heat | |
B. silk | |
C. Leather | |
D. Nylon |
| 233. | Which of the following is not a polymer? |
A. Nylon | |
B. teflon | |
C. caprolactus | |
D. polystery |
| 234. | Which of the following polymers is used in making bullet proof windows? |
A. polycarbonate | |
B. polystyrene | |
C. polyamide | |
D. UPPCS, 2015 |
| 235. | Which of the following polymers is used in the manufacture of non-stick pans? |
A. of teflon | |
B. of neoprene | |
C. PV C. ‘s | |
D. of gutta-percha |
| 236. | Is plastic really? |
A. complex compounds of saturated hydrocarbons | |
B. high polymers of unsaturated hydrocarbons | |
C. isomers of unsaturated hydrocarbons | |
D. an inorganic complex compound |
| 237. | Bakelite is the polymer of phenol and others? |
A. formaldehyde | |
B. acetaldehyde | |
C. Benzaldehyde | |
D. cinnaldehyde |
| 238. | PVC is formed by the polymerization of which of the following? |
A. protein | |
B. vinyl chloride | |
C. styrene | |
D. acetylene |
| 239. | The plastic called Teflon is formed by the polymerization of which compound? |
A. Ethylene | |
B. acetylene | |
C. Benzene | |
D. Tetrafluoroethylene |
| 240. | Rain coat is made from what? |
A. poly ethylene | |
B. poly styrene | |
C. polycarbonates | |
D. poly chlorothene |