BRAINLY के भाई बंधु , सवाल सुनो
Experiment 1. Preparation of :
a) a true solution of common salt, sugar and alum
b) a suspension of soil, chalk powder and fine sand in water
Answers
Answer:
True solution: A solution that has solute particles of size smaller than 1 nm (10-9 metres) in diameter, and cannot be seen with naked eyes. They do not scatter a beam of light, the particles do not separate by filtration and the particles do not settle down.
Suspension: It is a heterogeneous mixture in which solute particles do not dissolve but remain suspended, particles can be seen with naked eyes, it scatters a beam of light, particles can be separated from the mixture by filtration.
Explanation:
A) True solutions of common salt, sugar and alum.
Take three clean dry beakers, pour 100 ml of distilled water in each and add pinch of these (common salt, sugar and alum). Stir them properly. They will dissolve completely and hence you will get true solutions. Take three different beakers to make the true solutions.
B) Suspension:
Take three clean and dry beakers. Put 100 ml of water to them and then 10 g of all these (soil, chalk powder, fine sand) in different beakers. Stir them with glass rod and allow them to stand for sometime and note the observation.