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Coal and Petroleum — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceCoal and Petroleum1 Mark
MCQ
Consider the following statements and choose the incorrect one:
  • A
    He petroleum gas which has been liquefied under pressure is called liquefied petroleum gas.
  • B
    Natural gas consists mainly of methane with small quantities of ethane and propane.
  • C
    When natural gas is compressed by applying pressure, it is called compressed natural gas.
  • ✓
    Natural gas is called an uncleaned fuel because it burns with producing smoke.
✓

Answer

Correct option: D.
Natural gas is called an uncleaned fuel because it burns with producing smoke.
Natural gas is called a clean fuel because it burns without producing any smoke and does not cause air pollution. In fact, natural gas is stored under high pressure as compressed natural gas. It becomes easier to store, transport and use natural gas in the form of cng.

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