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JEE Main Chemistry question

ChemistryGeneral Principles and Processes of Isolation of Elements (Metallurgy)JEE Main

Not in JEE Main or NEET syllabus

The ratio of and Al, in thermite is [BITSAT 2007]

Answer: (C)

Solution

Using the thermite reaction Fe_2O_3 + 2Al \rightarrow Al_2O_3 + 2Fe, the mass ratio works out to approximately ( to Al),

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Question ID VK-138303