Question:
Which of the following steps are not involved in gravimetric analysis:
Which of the following steps are not involved in gravimetric analysis:
Updated On: Jul 14, 2026
- Precipitation
- Indicator
- Digestion
- Filtration
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The Correct Option is B
Approach Solution - 1
The correct option is (B): Indicator.
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Approach Solution -2
The question asks which listed step does not belong to the gravimetric analysis procedure. Let's check what each option actually does in an analytical method.
- Precipitation: Converting the ion of interest into an insoluble compound is the first working step of gravimetric analysis, so it is a genuine part of the method.
- Indicator: An indicator is a reagent that changes color at the endpoint of a titration in volumetric, or titrimetric, analysis. Gravimetric analysis does not use any color-change endpoint at all, since the amount of substance is found purely by weighing a solid, not by titrating a solution.
- Digestion: After precipitation, the precipitate is left to stand with its mother liquor so small crystals combine into larger, purer, more easily filtered particles, which makes digestion a real step in the gravimetric sequence.
- Filtration: The precipitate is separated from the liquid by filtration before washing, drying, and weighing, so this is also a genuine step of the gravimetric method.
Every option except the indicator describes an actual operation in the precipitate-to-weight workflow of gravimetric analysis.
The correct answer is Indicator.
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