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HCS (Haryana)Prelims2019General Studies
Question
Match the names of the fuels in Column I with their dominant chemical properties in Column II and select the correct answer using the options given below the columns: Column I A. Water Gas B. Natural Gas C. CNG D. LPG Column II 1. Methane 2. Butane and Propane 3. Methane, Ethane 4. Carbon Monoxide, Hydrogen
Options
- A A-4, B-3, C-1, D-2
- B A-1, B-4, C-3, D-2
- C A-2, B-4, C-2, D-1
- D A-3, B-1, C-2, D-4
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Correct Answer
A A-4, B-3, C-1, D-2
Model Answer
Water Gas
- Water-gas is a mixture of CO and H2.
- However, by-products such as char, tar, soot, ash, and condensates are also produced.
Natural gas
- Also called fossil gas; sometimes just gas is a naturally occurring hydrocarbon gas mixture consisting primarily of methane.
- It commonly includes varying amounts of other higher alkanes, and sometimes a small percentage of carbon dioxide, nitrogen, hydrogen sulphide, or helium.
- In comparison to other fuels, natural gas poses less of a threat in the event of a spill, because it is lighter than air and disperses quickly when released.
Compressed natural gas
- It is a fuel that can be used in place of petrol (gasoline), diesel fuel, and liquefied petroleum gas (LPG).
- CNG combustion produces fewer undesirable gases than the aforementioned fuels.
Liquefied petroleum gas
- (LPG or LP gas), is a flammable mixture of hydrocarbon gases used as fuel in heating appliances, cooking equipment, and vehicles.
- It is a mixture of 48% propane, 50% butane, and 2% pentane.
- Hence, Option 1 is correct.