Page 19 - 9-chem-6 practical

No. Liquid Liquid Observation
1. Water Oil
2. Water Ethanol

Water and oil are .................................... liquids while water and ethanol
are ....................................

1. What is the difference between miscible and immiscible liquids?
2. Why ethanol is miscible with water?
3. Why oil is immiscible with water?
4. Which pair of the following liquids are miscible?

(i) Water and olive oil
(ii) Mustard oil and olive oil
(iii) Water and chloroform

1. How will you remove grease stains from the cotton fabrics?

2. _______________________________________________________

DO YOU KNOW? 3. Water insoluble lubricants are used to run machines. What types
of soaps are used to clean these machines?
It is sometimes possible to
make a liquid solution by _______________________________________________________
mixing two solids together.
Potassium-sodium alloy is Why is it generally easy to remove stains from synthetic fabrics
an example of this. than from the cotton fabrics?
Potassium and sodium are
solid metals at room _______________________________________________________
temperature, but a liquid
solution is formed when the BRAIN TEASER
mixture contains 10% to Household polish and paint workers often use kerosene oil during their work.
50% sodium. Being insoluble in water, kerosene oil cannot be completely removed by
washing hands with soap. Think of a method to wash hands so that they are free
from the smell of kerosene oil.

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