JAMB Chemistry 2017 Objective — Question 27

Question 27 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2017 Objective paper, with the correct answer and a full explanation.

Sodium hydroxide can be used

A. A. in the purification of bauxiteCorrect
B. B. as a deoxidant in steel casting
C. C. in the extraction of sulphur
D. D. in the oxidation of iron

Explanation

Sodium hydroxide is used to purify bauxite (Al2O3.2H2O), the ore from which aluminium is extracted.

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