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JEE CHEMISTRY MCQ: GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

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Understanding +4 | -1
Statement-1 In leaching of red bauxite KOH\mathrm{KOH} or HNO3\mathrm{HNO}_3 can be used as leaching agents
Statement-2 Al2O3\mathrm{Al}_2 \mathrm{O}_3 is amphoteric in nature, it can react with both acid & base
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Correct option: C
Statement-1 is false, statement- 2 is true
The correct answer is C (Statement-1 is false, statement- 2 is true) because KOH can be used, but HNO3 cannot be used as a leaching agent for red bauxite.

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