Some Analytical Techniques — Important Questions
Maharashtra Board · Class 11 · Chemistry
44 important questions from Some Analytical Techniques for Maharashtra Board Class 11 Chemistry, with answers.
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Important Questions from Some Analytical Techniques
Which of the following are requirements for a good crystallization solvent?
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Compound should be sparingly soluble at room temperature, Compound should be highly soluble at high temperature, Solvent should be volatile
A good crystallization solvent should allow poor solubility at low temperature but high solubility at high temperature. It should be volatile for easy removal and should not react with the compound.
In chromatography, which phase moves through the stationary phase?
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Mobile phase
In chromatography, the mobile phase (usually a solvent or mixture of solvents) moves through or over the stationary phase, carrying the sample components at different rates.
Which of the following are types of chromatography based on the mechanism of separation?
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Adsorption chromatography, Partition chromatography
Based on the mechanism of separation, chromatography is classified into adsorption chromatography (based on differential adsorption) and partition chromatography (based on differential partitioning).
In thin layer chromatography (TLC), the stationary phase is:
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Silica gel or alumina
In TLC, a thin layer of adsorbent material like silica gel or alumina spread on a glass plate serves as the stationary phase.
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