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प्रश्न
Name and describe briefly a method which can be helpful in separating a mixture of husk from grains. What is the principle of this method?
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उत्तर
Husk can be separated from grains by the process of winnowing. When the mixture is allowed to fall down from a height, the lighter husk is carried away by air and fall on the ground. This method is based on the principle that in a mixture with components of different weights, the lighter particles are blown away by wind.
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संबंधित प्रश्न
Fill in the blank
Mixtures can be ...................... or .....................
Suggest a suitable technique to separate the constituents of the following mixtures. Also give the reason for selecting the particular method.
Calcium carbonate and sodium chloride
Match the ideal method of separation of components in a mixture in List I with the appropriate process in List II.
| List I | List II |
| 1. Sand from a mixture of sand and water | A: Separating funnel |
| 2. kerosene from a mixture of kerosene water | B: Sublimation |
| 3. Alcohol from a mixture of methyl alcohol and water | C: Filtration |
| 4. Naphthalene from a mixture of naphthalene and lead chloride | D: Distillation |
| 5. Pure water from impure water | E: Fractional distillation |
Explain with diagram the process used to – separate the following substance from the given mixtures - Benzene from a mixture of – benezene [b.p. 80°C] & toluene [b.p. 110°C].
Select the correct answer from the choice given below to complete the sentence :
A soluble solid is separated from an insoluble solid by ____________.
Very Short Answer Type Question:
You are given a mixture of salt and sand. Can you separate them by picking?
Name the apparatus that you will use to separate the components of mixtures containing two,
- miscible liquids,
- immiscible liquids
Match the following
| Column A | Column B | ||
| 1. | Separation of salt from saltwater | a. | Magnetic separation |
| 2. | Separation of tea leaves from tea extract | b. | Evaporation |
| 3. | Separation of sand and iron filings | c. | Churning |
| 4. | Separation of butter from curds | d. | Filtration |
State whether the following statement is true or false.
A mixture of oil and water can be separated by filtration.
You are provided with a mixture of salt, sand, oil and water. Write the steps involved for the separation of salt, sand and oil from the mixture by giving an activity along with the diagram.
