Question detail
Which statement would earn credit for Interpret information from instrumental analysis to identify substances.?
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 identify metal ions from a line spectrum
- B. To measure the mass of a substance
- C. To determine the pH of a solution
- D. To separate mixtures into their components
Answer
The correct answer is To identify metal ions from a line spectrum. It matches chemical analysis because the evidence is test observation and the expected result is supported conclusion.
Explanation
The correct option is To identify metal ions from a line spectrum. The answer stays inside Identification of ions by chemical and spectroscopic means by linking the observation to the conclusion instead of naming a substance without evidence. Other options are weaker when they confuse gas tests, flame colours, ion-test precipitates, chromatography evidence, or pure-substance/formulation wording.
Common mistake
Misinterpreting Spectra
Students often confuse the lines in a spectrum from flame emission spectroscopy with the wrong metal ion, leading to incorrect identifications.
To fix this, students should carefully study the characteristic line spectra for each metal ion and practice interpreting them with reference materials.
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