| 1 |
When i<sub>2</sub>present in the aquous layer in the form of I<sup>-1</sup><sub>3</sub>foes to CCI<sub>4</sub>layer, then the change in colour is from |
- A. Purple to brown
- B. Purple to green
- C. Green to brown
- D. Brown to purple
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| 2 |
When hot saturated solution is cooled very rapidly, we get |
- A. Medium sized crystals
- B. large sized crystals
- C. Premature crystallization of the substance
- D. Old crops of crystals
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| 3 |
The drying agents used in desiccator is. |
- A. BeCl2
- B. MgCl2
- C. CaCl2
- D. SrCl2
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| 4 |
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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| 5 |
The comparative rates at which the solutes move in paper chromatography, depends on |
- A. The size of paper used
- B. Their R<sub>f </sub>values
- C. Their partition coefficients
- D. The polarity of solvent used
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| 6 |
The drying agent used in a desiccator. |
- A. Agcl
- B. NH4Cl
- C. P2O5
- D. AlCl3
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| 7 |
The paper at which separation of solute have been taken place is called. |
- A. Retardation factor
- B. Chromatogram
- C. Base line
- D. Solvent front
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| 8 |
Compound which undergo sublimation is |
- A. KMnO4
- B. CaCO3
- C. NH4Cl
- D. Na2CO3
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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 |
Chromatography in which stationary phase is a solid is called. |
- A. Partition chromatography
- B. Paper chromatography
- C. High pressure liquid chromatography
- D. Adsorption chromatography
|