Question detail
Case 81 answer-sense. A student reviews the final answer. Which check best catches an exam error? Focus on why reactions high atom economy can economically in Atom economy, not on a neighbouring Unit 4.3 idea.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Yield and atom economy of chemical reactions (chemistry only)
Question
- A. Case 81 answer-sense: Check that the answer size, unit, and chemical context all match for why reactions high atom economy can economically
- B. Case 81 answer-sense: Accept the answer if it has many decimal places (Atom economy)
- C. Case 81 answer-sense: Choose the answer with the biggest number because it looks more complete (why reactions high atom economy can economically)
- D. Case 81 answer-sense: Drop the unit if the working contains a formula (Yield and atom economy of chemical reactions (chemistry only))
Answer
The correct option is Case 81 answer-sense: Check that the answer size, unit, and chemical context all match for why reactions high atom economy can economically.
Explanation
The correct option is Case 81 answer-sense: Check that the answer size, unit, and chemical context all match for why reactions high atom economy can economically. It supports the approved learning objective by keeping the method tied to why reactions high atom economy can economically in Atom economy. The other options are incorrect because they either use the wrong quantitative relationship, lose the required unit, confuse coefficients with subscripts, or report an answer without a complete worked method.
Common mistake
Misunderstanding Economic Importance
Students often confuse the concept of atom economy with overall yield, thinking that a high yield alone indicates economic importance.
Emphasize that atom economy specifically measures how much of the starting materials are converted into useful products, which is crucial for sustainability and cost-effectiveness in industrial processes. Keep the correction anchored to Atom economy; check formula, substitution, calculation, final answer, and unit where relevant.
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