| 1 |
Large value of distribution coefficient K means. |
- A. Component of solute dissolved large in mobile phase
- B. Components of solute do not dissolve in mobile phase
- C. Components of solute remains at original spot
- D. All statements are correct
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| 2 |
During the process of crystallization, the hot saturated solution. |
- A. Is cooled very slowly to get large sized crystals.
- B. Is cooled at a moderate rate to get medium sized crystals
- C. Is evaporated to get the crystals of the product.
- D. Is mixed with an immiscible liquid to get the pure crystals of the product.
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| 3 |
Chromatography in which stationary phase is a solid is called. |
- A. Partition chromatography
- B. Paper chromatography
- C. High pressure liquid chromatography
- D. Adsorption chromatography
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| 4 |
During paper chromatography, the stationary phase is. |
- A. Solid
- B. Liquid
- C. Gas
- D. Plasma
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| 5 |
Solvent extraction is an equilibrium process and it is controlled by. |
- A. Law of mass action
- B. The amount of solvent used
- C. Distribution law
- D. The amount of solute
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| 6 |
Chromatography involves the distribution of a solute between. |
- A. Two stationary phases
- B. Two mobile phases
- C. A stationary phase and a mobile phase
- D. Two stationary and two mobile phase.
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| 7 |
One of the following substances does not undergo sublimation |
- A. KMnO<sub>4</sub>
- B. Naphthalene
- C. NH<sub>4</sub>CI
- D. Iodine
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| 8 |
Which one of the following substances is not used as drying agent in desiccators. |
- A. Calcium chloride
- B. Phosphorus pentoxide
- C. Silica gel
- D. 50% NaCl
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| 9 |
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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| 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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