Which of the following oxides shows electrical properties like metals ?

(a) $S i O_{2}$ (b) MgO (c) $S O_{2} () s$ (d) $C r O_{2}$

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Solution

Answer: d) $C r O_{2}$

$C r O_{2}$ , TiO and $R e O_{3}$ are some typical metal oxides which show electrical conductivity similar to metal. while $S i O_{2}$ , MgO and $S O_{2}$ are oxides of Semi-metal, metal and non-metal which do not show electrical properties.

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