Question detail
How can uncertainty in measurements affect practical results?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
A-level practical endorsement and required practical activities
Question
- A. It can lead to inaccurate conclusions
- B. It has no effect on results
- C. It always improves the accuracy of results
- D. It only affects qualitative data
Answer
It can lead to inaccurate conclusions
Explanation
The correct option is It can lead to inaccurate conclusions. It can lead to inaccurate conclusions is the best answer because it directly supports the AQA A-Level Chemistry objective to apply risk management and safe working in practical contexts. This reasoning is anchored to A-level practical endorsement in A-level practical endorsement and required practical activities, and it separates risk management from similar A-Level ideas rather than relying on a vague recall statement. Other options are weaker if they use the wrong evidence, calculation, mechanism, observation, unit, or conclusion for this subtopic.
Common mistake
Ignoring Safety Protocols
Students often overlook the importance of wearing appropriate personal protective equipment (PPE) during practical experiments, which can lead to accidents or injuries.
Always follow safety guidelines by wearing gloves, goggles, and lab coats. For example, when handling acids, the rule is to wear gloves and goggles to protect skin and eyes. This ensures a safe working environment. Keep the correction anchored to A-level practical endorsement and the objective: Apply risk management and safe working in practical contexts.
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