Question detail
A student is testing flame test. Which choice keeps the observation and conclusion correctly linked?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Identification of ions by chemical and spectroscopic means
Question
- A. Calcium
- B. Copper
- C. Potassium
- D. Aluminium
Answer
The correct answer is Copper. It matches flame test because the evidence is flame colour and the expected result is metal ion identity.
Explanation
The correct option is Copper. The important distinction is that flame test must be identified from flame colour; answers that swap in a different test or result do not match Flame tests. Other options are weaker when they confuse gas tests, flame colours, ion-test precipitates, chromatography evidence, or pure-substance/formulation wording.
Common mistake
Misunderstanding Flame Tests
Students often think that flame tests provide quantitative data about the concentration of metal ions.
Remember that flame tests are qualitative tests, meaning they only indicate the presence of specific metal ions based on the color of the flame, not their concentration.
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