Question detail
In Flame tests, which answer best matches the evidence for flame test?
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. To measure the mass of a sample.
- B. To identify the presence of specific metal ions based on flame color.
- C. To determine the pH of a solution.
- D. To quantify the concentration of ions in a solution.
Answer
The correct answer is To identify the presence of specific metal ions based on flame color.. It matches flame test because the evidence is flame colour and the expected result is metal ion identity.
Explanation
The correct option is To identify the presence of specific metal ions based on flame color.. This is correct because flame colour is the evidence expected for flame test, and metal ion identity is the result that supports the conclusion. 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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