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प्रश्न
Name the process by which common salt is obtained from sea-water.
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उत्तर
Common salt is obtained from seawater by the process of evaporation.
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संबंधित प्रश्न
Select the correct alternative
The molecules can move freely anywhere in
- gases
- liquids
- solids
- none of the above
What are the characteristics of matter?
Name one element, one compound and one mixture.
Classify the following into elements and compounds :
- H2O
- He
- Cl2
- CO
- Co
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.
If 25 mL of acetone is present in 150 mL of its aqueous solution, calculate the concentration of solution.
What happens when the temperature of a saturated sugar solution is increased ?
Choose one term from the following which includes the other three :
aerosol, emulsion, colloid, sol
You have been given a suspension and a solution. How could you tell the difference between them by their appearance ?
What is a colloid ? Give two examples of colloids (or colloidal solutions)
Differentiate between a saturated and an unsaturated solution. How will you test whether a given solution is saturated or not ?
State whether the following statement are true or false :
Salt and water can be recovered from an aqueous salt solution by the process of evaporation.
Name the process which can be used to recover salt from an aqueous salt solution.
Describe the method of separating a mixture containing common salt, sand and ammonium chloride.
Which of the following cannot be separated from air by the process of fractional distillation ?
State whether true or false. If false, correct the statement.
Oil and water are immiscible with each other.
What type of matter glass is?
Gas-solid is ______.
Define the term matter.
