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प्रश्न
Fill in the following blanks with suitable words :
Miscible liquids are separated by .....................
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उत्तर
Miscible liquids are separated by fractional distillation.
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संबंधित प्रश्न
Intermolecular force of attraction is maximum in ............ less in .......... and the least in .............
The inter-molecular space is maximum in
What are molecules ?
Out of solids, liquids and gases, which one has :
- maximum movement of particles ?
- maximum interparticle attractions ?
- minimum spaces between particles ?
Which of the following is a mixture ?
Salt, Air, Water, Alum, Sugar
Name a non-metal :
- which is lustrous
- which is required for combustion
- whose one of the allotrophic forms is a good conductor of electricity. Name the allotrope.
- other than carbon which shows allotropy
- which is known to form the largest number of compounds
What are the three general classes of matter ? Give one example of each type.
Which of the following are compounds ?
- CO
- No
- NO
- Co
In the following set of substances, one item does not belong to the set. Select this item and explain why it does not belong to the set :
Hydrogen, Oxygen, Steam, Chlorine
Define solute.
Define Sol and give one example.
Name the process by which common salt is purified.
How will you separate water from mustard oil ?
You are given a mixture of iodine in alcohol called tincture iodine. Which method will you use to recover both, iodine as well as alcohol, from this mixture ?
Explain the meaning of the term ‘matter’.
Give some examples of the Tyndall effect observed in your surroundings?
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal which exists as a liquid at room temperature.
______ is so hard that it can scratch glass.
Complete the following table:
| S.No. | CELSIUS | KELVIN |
| 1. | 90°C | 363 K |
| 2. | ______ | 283 K |
| 3. | 63 °C | ______ |
| 4. | 250°C | ______ |
| 5. | ______ | 303 K |
Intermolecular space is maximum in ______.
