Question detail
For Percentage yield, which option best supports this Unit 4.3 objective: (chemistry only) Define yield as the amount of product obtained from a reaction?
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. 62.5%
- B. 75%
- C. 80%
- D. 100%
Answer
The answer is 62.5 %.
Explanation
The correct option is 62.5%. This uses Percentage Yield because the objective is about (chemistry only) Define yield as the amount of product obtained from a reaction. The reasoning belongs to Percentage yield within Yield and atom economy of chemical reactions (chemistry only), so it should not be confused with nearby quantitative ideas such as mass, moles, concentration, yield, atom economy, or gas volume unless those are named in the objective. Use the focus term chemistry only to keep the answer aligned with AQA GCSE Chemistry 8462 Unit 4.3. The other options are weaker because they either use the wrong formula, the wrong unit, a vague relationship, or the wrong quantitative context.
Common mistake
Confusing Yield Definition
Students often confuse yield with the theoretical yield, thinking it refers to the maximum possible amount of product rather than the actual amount obtained.
Clarify that yield specifically refers to the actual amount of product obtained from a reaction, not the theoretical maximum.
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