1 |
One of the following substances is not used as a drying reagent in a desiccator |
- A. Cons. H<sub>2</sub>SO<sub>4</sub>
- B. P<sub>2</sub>O<sub>5</sub>
- C. Silica gel
- D. 50% KOH
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2 |
Solvent extraction method is particularly useful technique for separation when the product to be speared is. |
- A. Non volatile or thermally unstable
- B. Volatile or thermally stable
- C. Non volatile or thermally stable
- D. Volatile or thermally unstable
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3 |
In paper chromatograghy the point at which the solvent rises to maximum extent is called |
- A. Event
- B. Chromatogram
- C. Solvent front
- D. Base line
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4 |
Which is not used as drying agent in a desiccator. |
- A. Cacl2
- B. NaCl
- C. P2O5
- D. Salica Gel
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5 |
Chromatography in which the stationary phase is a solid is classified as. |
- A. Partition chromatography
- B. Gas chromatography
- C. Adsorption Chromatography
- D. Thin layer chromatography
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6 |
In solvent extraction, solute can be separated from solution, by shaking the solution with solvent in which the solute is. |
- A. More soluble
- B. Partially soluble
- C. Insoluble
- D. soluble at high temp
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7 |
The drying agent used in a desiccator. |
- A. Agcl
- B. NH4Cl
- C. P2O5
- D. AlCl3
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8 |
Several types of filter media are used for filtration depending on |
- A. Natural of reactants
- B. Nature of reaction
- C. Size of precipitate
- D. Nature of filter paper
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9 |
Which one of the following substances is used as decolouring agent |
- A. Animal charcol
- B. Concentrated H<sub>2</sub>SO<sub>4</sub>
- C. CaCI<sub>2</sub>
- D. Silica gel
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10 |
A filtration process could by very time consuming if it were into aided by a gentle suction which is developed. |
- A. If the paper covers the funnel upto its circumference
- B. If the paper has got small sized pores in it.
- C. If the stem of the funnel is large so that it dips into the filtrate
- D. If the paper fits tightly
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