Q1 For each question there are four possible answers, A, B, C, and D. Choose the one you consider to
be correct.
1 In the Basic Oxygen steel-making process the P4O10 impurity is removed by reacting it with
calcium oxide. The only product of this reaction is the salt calcium phosphate, Ca3(PO4)2.
In this reaction, how many moles of calcium oxide react with one mole of P4O10?
A 1 B 1.5 C 3 D 6
Solution
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9702/01 Paper 1 Multiple Choice
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It is basically balancing of equation. Answer is D. 6 moles
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