| 1 |
The drying agent used in a desiccator. |
- A. Agcl
- B. NH4Cl
- C. P2O5
- D. AlCl3
|
| 2 |
"The components of which mixture can be separated by filtration". |
- A. NaCl and CaCl2
- B. Calcium carbonate and NaCl
- C. Blue and green inks
- D. Sand and naphthalene
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| 3 |
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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| 4 |
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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| 5 |
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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| 6 |
Compound which undergo sublimation is |
- A. KMnO4
- B. CaCO3
- C. NH4Cl
- D. Na2CO3
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| 7 |
In order to have good crystals of a substance the temperature of the system at the time of preparation of solution should be |
- A. Around 0°C
- B. Around room temperature
- C. Sufficiently more than room temperature
- D. Just above the room temperature
|
| 8 |
Which of the following substances is used as decolorizing agent. |
- A. Silica gel
- B. Animal charcoal
- C. conc. H2SO4
- D. Asbestos
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| 9 |
The substance used for decolorization of crystalline substance is |
- A. G2O5
- B. Chloroform
- C. Animal charcoal
- D. Soda ash
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| 10 |
Which of the following precautions in necessary for smooth filtration |
- A. The filter paper should be of big size
- B. The tip of funnel should not touch the side of the beaker
- C. The stem of the funnel should be very small
- D. The stem of he funnel should remain continuously full of liquid
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