Question:
Fill in the blanks
- A colloid is a …………… mixture and its components can be separated by the technique known as …………… .
- Ice, water and water vapours look different and display different …………… properties but they are the …………… same.
- A mixture of chloroform and water taken in a separating funnel is mixed and left undisturbed for some time. The upper layer in the separating funnel will be of …………… and the lower layer will be that of …………… .
- A mixture of two or more miscible liquids for which the difference in the boiling points is less than 25 K, can be separated by the process called …………… .
- When light is passed through water containing a few drops of milk, it shows a bluish tinge. This is due to the …………… of light by milk and the phenomenon is called …………… . This indicates that milk is a …………… solution.
Solution:
1. heterogenous, centrifugation
2. physical, chemically
3. water, chloroform (density of water is less than that of chloroform)
4. fractional distillation
5. scattering, Tyndall effect, colloidal (also called emulsion).