Q1 of 55 Page 169

What is the chemical formula of alumina?

Alumina is the oxide of aluminium (aluminium oxide), which is produced from refining of bauxite.

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1

Which of the following reactions is called roasting?

 1

Which of the following is an alloy?

 1

During which reaction dihydrogen gas is not produced under normal conditions?

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In which of the following, displacement reaction is possible?