5. How will you prepare a saturated solution of sugar? What will happen when this solution is heated?
6. Name the method of separation that can be used in the following situations.
a. Accidental mixing of mustard oil and water.
b. Adulterated urad dal having papaya seeds in it.
c. If you find that your bhelpuri has large number of cut green chilies.
d. Your mother asks you to wash dirty rice grains before cooking them.
7. Differentiate between each between each of the following pairs:
a. Homogeneous solutions and heterogeneous solutions
b. Pure substances and mixed substances c. Solute and solvent
d. Sedimentation and decantation
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Answer:
5)
a solution in which no more substance can be dissolved is called a saturated solution. we will add water to sugar and then cool it and then heat it so the sugar remains in the beaker and the evaporates away. As the temperature of the solvent increases, solubility increases
6) A
As mixture of mustard oil and water is immiscible (liquids which do not mix each other). These can be separated by using separating funnel. The method of separation is based on the difference in densities of the liquids
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