12th Class Chemistry The Solid State / ठोस प्रावस्था Question Bank 12th CBSE Chemistry The Solid State

  • question_answer
    Gas lighter when pressed produces flame. Explain.

    Answer:

                    Certain gas lighters consist of piezoelectric crystals. When pressure is applied, the displacement of constituents in the crystal takes place resulting in electric spark as a result of which fuel gas present in the lighter catches fire and flame is produced.  (i) Ge doped with In (ii) B doped with Si.


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