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प्रश्न
Lemonade is prepared by mixing lemon juice and sugar in water. You wish to add ice to cool it. Should you add ice to the lemonade before or after dissolving sugar? In which case would it be possible to dissolve more sugar?
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उत्तर
The solubility of a substance decreases with decreases in temperature. After the addition of ice, the temperature of the lemonade decreases, and dissolving sugar in cold water is difficult. Therefore, ice should be added to lemonade after dissolving the sugar.
संबंधित प्रश्न
Name the different types of chromatographic techniques.
Fill in the blank
Clay is separated from water by the method called ______
State any one method – to separate the following mixtures – A solid-liquid mixture containing an insoluble solid in the liquid component
State any one method – to separate the following mixtures – A liquid-liquid mixture containing – two immiscible'' liquids having different densities
Give a reason for the following statement :
Centrifugation can be used for separating an insoluble heavier solid, present in an – insoluble solid-liquid mixture.
Very Short Answer Type Question:
You are given a mixture of salt and sand. Can you separate them by picking?
A mixture of powdered salt and sugar can be separated by the process of winnowing.
What is meant by separation?
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 iron filings and rice flour can be separated by magnet.
