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| Q. |
Domestic cooking gas consists mostly of |
| A. | methane and ethane |
| B. | liquefied butane and isobutene |
| C. | hydrogen and acetylene |
| D. | ethylene and carbon monoxide |
| Answer» B. liquefied butane and isobutene | |
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Explanation: Domestic gas is another name for Liquefied Petroleum Gas (LPG). Varieties of LPG bought and sold include mixes that are primarily propane (C3H8), primarily butane (C4H10) and, most commonly, mixes including both propane and butane, depending on the season — in winter more propane, in summer more butane. |
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