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Dual Nature of Radiation and Matter — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsDual Nature of Radiation and Matter1 Mark
MCQ
Find the odd one out.
  • A
    Chlorine
  • B
    Sodium
  • C
    Oxygen
  • D
    Helium
✓

Answer

  1. Sodium

Explanation:

In this, sodium is the odd one out because, sodium, being an alkali metal, is photosensitive while the others are not photosensitive materials. Sodium metal emits electrons even when ordinary light falls on it. Therefore, it is known as a photosensitive material.

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