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Alkali metals are useful as electrodes in cells that are:
AFuel type
BElectrolytic
CPhotoelectric
DGalvanic type
Answer & Solution
Correct answer: C. Photoelectric
1. Light falling on these metals releases electrons.
2. That makes them suited to one kind of cell.
3. They serve as electrodes in photoelectric cells.
_Source: NCERT Class 11 Chemistry Part II, Unit 10, The s-Block Elements._
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