Which is not related pair of term used in analytical techniques
Correct answer: B. ) Sublimate, sublimation
- A. Filtrate, residue
- B. ) Sublimate, sublimation
- C. Drying, desiccator
- D. Separating funnel, mother liquor
Explanation
Not a related pair of terms used in analytical techniques (Option B - Sublimate, sublimation):Sublimate refers to the material that undergoes sublimation, i.e., transforms from a solid to a vapor without going through a liquid phase.Sublimation is the phase transition of a substance directly from a solid to a gas without passing through the liquid phase.These terms are directly related to each other, describing the process and the material undergoing sublimation.Why the other options are incorrect:(a) Filtrate, residue: Filtrate refers to the liquid that passes through the filter paper during filtration, while residue refers to the solid material left behind on the filter paper. These terms are related to each other in the process of filtration.(c) Drying, desiccator: Drying refers to the removal of moisture or liquid from a substance, while a desiccator is a container used to maintain a low-humidity environment. These terms are related as they both involve the control of moisture content, often in analytical techniques.(d) Separating funnel, mother liquor: A separating funnel is used for liquid-liquid extractions, while mother liquor refers to the solution remaining after crystallization. Although they represent different processes, they are related in the context of separating components in analytical techniques.
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About Experimental Techniques in Chemistry
Separation methods are selected according to differences in solubility, particle size, volatility and sublimation behaviour. Filtration and crystallisation separate insoluble or dissolved solids, sublimation isolates suitable volatile solids, distillation separates liquids by boiling point, and solvent extraction transfers a substance between immiscible solvents.
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