Match List-I (Fuel gases) with List-II (Major constituents) and select the correct answer using the codes given below the lists: List-I List-IIA. CNG1. Carbon monoxide, HydrogenB. Coal gas2. Butane, PropaneC. LPG3. Methane, EthaneD. Water gas4. Hydrogen, Methane, Carbon monoxideCodes:
✓ Correct answer: b) A-3; B-4; C-2; D-1
ExplanationFuel gases are gaseous compounds used for heating, cooking, and industrial processes.Common types include CNG, LPG, coal gas, and water gas, each with specific compositions that make them efficient and versatile energy sources.A is matched with 3: Compressed Natural Gas (CNG) mainly contains methane (CH₄) and a small amount of ethane (C₂H₆).Science and Technology 609 B is matched with 4: Coal gas consists of hydrogen (H₂), methane (CH₄), and carbon monoxide (CO), produced during coal carbonization.C is matched with 2: Liquefied Petroleum Gas (LPG) is a mixture of butane (C₄H₁₀) and propane (C₃H₈).D is matched with 1: Water gas is a mixture of carbon monoxide (CO) and hydrogen (H₂), produced by passing steam over heated coal.352
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