| 31. | The substances which give off heat on burning are called |
A. Coal | |
B. burner | |
C. heating | |
D. fuel |
| 32. | By passing water vapor over red hot coke, a mixture of carbon monoxide and hydrogen gases is formed, which is called |
A. coal gas | |
B. water gas | |
C. producer gas | |
D. bio gas |
| 33. | Which of the following mixture is called coal gas? |
A. H₂, CH₄, CO | |
B. H₂, N₂, CO | |
C. H₂ , N₂, O₂ | |
D. H₂ , O₂ , CO₂ |
| 34. | The gaseous mixture of carbon monoxide and nitrogen is called |
A. coal gas | |
B. water gas | |
C. producer gas | |
D. natural gas |
| 35. | Consists mainly of natural gas |
A. methane | |
B. ethane | |
C. propane | |
D. butane |
| 36. | Liquefied mixture of normal butane and isobutane is called |
A. water gas | |
B. coal gas | |
C. producer gas | |
D. liquefied petroleum gas |
| 37. | From the point of view of safety, the gas is made smelly by filling in the LPG gas cylinder for cooking. |
A. helium | |
B. ammonia | |
C. mercaptan | |
D. ether |
| 38. | Gobar gas mainly consists of |
A. methane | |
B. ethylene | |
C. acetylene | |
D. carbon monoxide |
| 39. | Which gas is mainly found in LPG |
A. methane | |
B. Carbon dioxide | |
C. butane | |
D. sulfur dioxide |
| 40. | What is water gas a combination of? |
A. CO and H₂O | |
B. CO₂ and CO | |
C. CO and H₂ | |
D. CO₂ and H₂ |