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Physical and Chemical Changes — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7SciencePhysical and Chemical Changes1 Mark
MCQ
Glowing of an electric bulb is a $........$ change:
  • ✓
    Physical
  • B
    Chemical
  • C
    Both physical and chemical changes
  • D
    None of these
✓

Answer

Correct option: A.
Physical
When electricity is passed through the bulb $($tungsten$)$ the electrons in the atoms get excited and release the energy as light in terms of photons. So no chemical reaction is taking place. It is a physical reaction.

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