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प्रश्न
Which of the following statements is not true?
विकल्प
Piezoelectric crystals produce electricity when subjected to a mechanical stress.
The electric current produced on heating certain polar crystals is called ferroelectricity.
PbZrO3 is an antiferroelectric substance.
Piezoelectric crystals are used as pickups in record players.
MCQ
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उत्तर
The electric current produced on heating certain polar crystals is called ferroelectricity.
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