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Combustion and Flame — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceCombustion and Flame1 Mark
MCQ
What is a major cause of global warming?
  • A
    Gaseous nitrogen oxides released by petrol engines.
  • B
    Oxides of sulphur and nitrogen dissolved in rain water.
  • C
    Emission of sulphur dioxide on combustion of coal.
  • ✓
    Release of carbon dioxide on combustion of fuels.
✓

Answer

Correct option: D.
Release of carbon dioxide on combustion of fuels.

On combustion, almost every fuel releases carbon dioxide in the environment. The increased concentration of carbon dioxide is believed to capture the reflected rays, thereby increasing the temperature of the Earth. Hence, it leads to global warming.

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