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प्रश्न
Fill in the following blanks with suitable words :
A heterogeneous mixture of liquid and solid is conveniently separated by...............
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उत्तर
A heterogeneous mixture of liquid and solid is conveniently separated by centrifugation.
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संबंधित प्रश्न
Match the following
| Column A | Column B | ||
| (a) | Molecules | (i) | Water boils |
| (b) | 100° C | (ii) | Evaporation |
| (c) | 0° C | (iii) | Changes from solid to gas |
| (d) | At all temperatures | (iv) | Matter |
| (e) | Camphor | (v) | Water freezes |
Classify the following into elements, compounds and mixtures:
- Sodium
- Soil
- Sugar solution
- Silver
- Calcium carbonate
- Tin
- Silicon
- Coal
- Air
- Soap
- Methane
- Carbon dioxide
- Blood
The best evidence for the existence and movement of particles in liquids was provided by :
Name the property which allows metals to be hammered into thin sheets.
What are (i) metals (ii) non-metals, and (iii) metalloids ? Give two examples each of metals, non-metals and metalloids.
Which one of the following is not a metalloid ?
Out of a colloid, solution and a suspension :
which one has the smallest particles ?
Which of the two will scatter light : soap solution or sugar solution ? Why ?
Which of the following is a sol ?
Shaving cream, Milk, Fog, Soap solution, Hairspray
9.72 g of potassium chloride dissolves in 30 g of water at 70°C. Calculate the solubility of potassium chloride at that temperature.
Which one of the following is not a chemical change ?
Describe a method to separate a mixture of camphor and sand.
How is the impurity of iron present in several substances removed in industries ?
How is water purified on a large scale at water works ? Explain with the help of a labelled diagram. Name the substance which is added to kill germs in the drinking water supply ?
What difference in the properties of common salt and sand would enable you to separate a mixture of these two substances ?
Explain the meaning of the term ‘matter’.
What's the solution?
We need to rub salt on a corncob, but only salt crystals are available.
Higher the temperature, the higher the kinetic energy of particles.
Gas-solid is ______.
Define the term matter.
