Question detail
Case 36 answer-sense. A student reviews the final answer. Which check best catches an exam error? Focus on Identify the desired product when calculating atom 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 36 answer-sense: Check that the answer size, unit, and chemical context all match for Identify the desired product when calculating atom
- B. Case 36 answer-sense: Accept the answer if it has many decimal places (Atom economy)
- C. Case 36 answer-sense: Choose the answer with the biggest number because it looks more complete (Identify the desired product when calculating atom)
- D. Case 36 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 36 answer-sense: Check that the answer size, unit, and chemical context all match for Identify the desired product when calculating atom.
Explanation
The correct option is Case 36 answer-sense: Check that the answer size, unit, and chemical context all match for Identify the desired product when calculating atom. It supports the approved learning objective by keeping the method tied to Identify the desired product when calculating atom 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
Confusing Desired Product
Students often misidentify the desired product when calculating atom economy, leading to incorrect calculations.
Carefully read the question to determine which product is specified as the desired product before proceeding with the atom economy calculation.
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