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प्रश्न
Write scientific reason.
Constituent substances of a colloid cannot be separated by ordinary filtration.
उत्तर
Constituent substances of a colloid cannot be separated by ordinary filtration because the size of the particles in colloids (or colloidal solution) is bigger than those in a true solution but smaller than those in suspension. It is in between 1nm to 100nm in diameter. The size of ordinary filter paper is more than 100nm due to which colloidal particles are passed through the pores of a filter paper. Due to which, we prefer to use ultra filter paper so that, filtration of colloidal particles takes place easily.
संबंधित प्रश्न
Explain the following giving an example.
Colloid
Which of the following will show the “Tyndall effect”?
- Salt solution
- Milk
- Copper sulphate solution
- Starch solution
State whether the following statement is true or false :
Milk is a pure substance.
State whether true or false. If false, correct the statement.
Liquid–liquid colloids are called gel.
Explain Tyndall effect and Brownian movement with suitable diagram.
Explain why particles of a colloidal solution do not settle down when left undisturbed, while in the case of a suspension they do.
The intensity of scattered light depends on the type of colloidal solution and the size of the colloidal particles.
Classify colloids based on the physical state of the dispersed phase and the dispersion medium.
The solution of soap in water is ______.
What are Colloidal Solutions?
