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Standard X

Chemistry

Concentration of Ore

Bauxite is co...

Question

Bauxite is concentrated by Bayer's process, a precipitate is obtained. When this precipitate is filtered, washed, dried and ignited at $1000^{o} C$ , _______ is obtained.

A l_{2} O_{3}

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N a A l O_{2}

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A l (O H)_{3}

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A l O

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Solution

The correct option is A $A l_{2} O_{3}$
When bauxite is concentrated by Bayer's process, a precipitate is obtained. When this precipitate is filtered, washed, dried and ignited at $1000^{o} C$ , $A l_{2} O_{3}$ is obtained.

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In the ore Bauxite $A l_{2} O_{3} .2 H_{2} O$ there are two significant types – Red Bauxite and White Bauxite. Bayer’s process is applicable for __ Bauxite.

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Bauxite is concentrated by Bayer's process, a precipitate is obtained. When this precipitate is filtered, washed, dried and ignited at 1000oC, _______ is obtained.

The correct option is A Al2O3When bauxite is concentrated by Bayer's process, a precipitate is obtained. When this precipitate is filtered, washed, dried and ignited at 1000oC, Al2O3 is obtained.

Bauxite is concentrated by Bayer's process, a precipitate is obtained. When this precipitate is filtered, washed, dried and ignited at $1000^{o} C$ , _______ is obtained.

The correct option is A $A l_{2} O_{3}$
When bauxite is concentrated by Bayer's process, a precipitate is obtained. When this precipitate is filtered, washed, dried and ignited at $1000^{o} C$ , $A l_{2} O_{3}$ is obtained.