| 31. | The petrol sold at the petrol station is mixed gasoline, on mixing – |
A. Increases the anti-knock quality of petrol | |
B. petrol gets cheaper | |
C. odor is reduced | |
D. The smoke released on the combustion of petrol is reduced |
| 32. | How is the quality of a gasoline sample determined? |
A. from its iodine value | |
B. from its cetane number | |
C. by its octane number | |
D. by its mass |
| 33. | Glycol is added to aviation gasoline because it |
A. Reduces evaporation of petrol | |
B. Increases the efficiency of petrol | |
C. Prevents freezing of petrol | |
D. reduces petrol consumption |
| 34. | Wax obtained from petroleum is – |
A. carnauba wax | |
B. jojoba wax | |
C. paraffin wax | |
D. whale wax |
| 35. | Where is spermatic wax obtained from? |
A. from palm leaves | |
B. from the roofs of honey | |
C. from petroleum | |
D. from whale |
| 36. | Commercial Vaseline is extracted from |
A. plant gum | |
B. bitumen | |
C. arna wax | |
D. petroleum |
| 37. | paraffin is a byproduct of |
A. petroleum refining | |
B. of the Institute of Agricultural Wastes | |
C. of cottage industries engaged in beekeeping | |
D. leather industry |
| 38. | what is the main component of petrol |
A. pentane | |
B. octane | |
C. methane | |
D. hexane |
| 39. | Petroleum has a homogeneous mixture of – |
A. of carbonates | |
B. of carbohydrates | |
C. of hydrocarbons | |
D. none of these |
| 40. | Considered to be the progenitor of all aliphatic compounds |
A. methane | |
B. ethane | |
C. Benzene | |
D. ethylene |