WBCHSE HS Chemistry Practice Questions - West Bengal Higher Secondary Examination - Chemistry Exam

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A sample of ferrous oxide has the non-stoichiometric formula Fe₀.₉₅O. What type of crystal defect is responsible for this non-stoichiometric composition?

Frenkel defect Metal excess defect due to anionic vacancies Metal deficiency defect due to cation vacancies Impurity defect

Correct Answer:

Metal deficiency defect due to cation vacancies

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