| 11. | catalyst a substance that increases the rate of a chemical reaction |
A. increases | |
B. reduces | |
C. converts | |
D. none of these |
| 12. | who discovered the catalyst |
A. Bergilius | |
B. rutherford | |
C. Lewis | |
D. Kosel |
| 13. | When the physical states of both the reactants and the catalyst are same, then the catalyst is called |
A. heterogeneous catalyst | |
B. homogenous stimulus | |
C. causative agent | |
D. induced catalyst |
| 14. | When the physical states of both the reactants and the catalyst are different, then the catalyst is called |
A. homogenous stimulus | |
B. heterogeneous catalyst | |
C. induced catalyst | |
D. causative agent |
| 15. | Negative Catalyst is one which |
A. reduce the rate of reaction | |
B. increase the rate of reaction | |
C. change the rate of the reaction | |
D. inspirers behave like catalysts |
| 16. | A positive catalyst is one which – |
A. reduce the rate of reaction | |
B. increase the rate of reaction | |
C. change the rate of the reaction | |
D. inspirers behave like catalysts |
| 17. | If the product acts as a catalyst in a reaction, it is called |
A. Summary catalyst | |
B. heterogeneous catalyst | |
C. self propelled | |
D. induced catalyst |
| 18. | catalyst is poison |
A. verb inhibitor | |
B. self propelled | |
C. homogenous stimulus | |
D. heterogeneous catalyst |
| 19. | how does trigger venom work |
A. by chemical combination with catalyst | |
B. by binding to free valences on the catalyst surface | |
C. reactant | |
D. by coagulating the catalyst |
| 20. | enhancer works |
A. by increasing the surface energy of the catalyst | |
B. making the surface of the catalyst more uneven | |
C. by making the surface of the catalyst smoother than before | |
D. By increasing the rate of analysis of page packages |