Heena Sharma, Shubhankat Vats and, Rashmi Gupta Solutions for Chapter: Is Matter Around Us Pure?, Exercise 6: CHAPTER EXERCISE

A solution contains $50 \mathrm{mL}$ of alcohol mixed with $150 \mathrm{mL}$ of water. Calculate the concentration of this solution.

The solubility of potassium nitrate at $20°\mathrm{C}$is $32 \mathrm{g}$ per $100 \mathrm{g}$ of water. How much salt is required to prepare$66 \mathrm{g}$ of its saturated solution?

How many litres of $15\%$ (mass/volume) sugar solution would it take to get$75 \mathrm{g}$ of sugar? Calculate the mass by volume percentage of the solution.

Draw a flow sheet diagram showing the separation of various components of a mixture containing camphor, sand and iron filings.

Describe the process to show that the dye used in blue/black ink is a mixture of two or more components with a diagram.

How will you separate the components of a mixture containing two miscible liquids? Give experimental details.

What is crystallisation? How can this technique be used to purify impure copper sulphate?

Describe the various steps involved in the purification of water for city water supply.