A-LevelChemistryAtoms, molecules and stoichiometryMay/June 2018Paper 1 Q151 Mark
To manufacture cement, 1000 million tonnes of limestone are decomposed each year. To manufacture lime for agriculture, 200 million tonnes of limestone are decomposed each year. What is the total mass of carbon dioxide in million tonnes produced from these two processes in a year?
A440
B528
C660
D880
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of atoms, molecules and stoichiometry within the Chemistrysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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