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प्रश्न
Classify the following into true solutions and colloidal solutions:
Ink, Salt solution, Starch solution, Blood, Sugar solution
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उत्तर
True Solutions: Salt solution and sugar solution.
Colloidal Solutions: Starch solution, ink, and blood
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संबंधित प्रश्न
Fill in the blank :
The substances which can flow are called ________
Name the terms for the particles of matter which may or may not have independent existence.
Fill in the blank
Any matter which has a definite _______ but no definite shape is called a _______
The best evidence for the existence and movement of particles in liquids was provided by :
When extremely small particles X derived from the anther of a flower were suspended in a liquid Y and observed through a microscope, it was found that the particles X were moving throughout the liquid Y in a very zig-zag way. It was also observed that warmer the liquid Y, faster the particles X moved on its surface.
- What could particles X be ?
- What do you think liquid Y is ?
- What is the zig-zag movement of X known as ?
- What is causing the zig-zag movement of particles X ?
- Name the scientist who discovered this phenomenon.
- What does this experiment tell us about the nature of liquid Y?
What is meant by saying that non-metals are brittle ?
Fill in the following blanks with suitable words :
Brass is an alloy which is considered a ..............
What is a colloid ? Give two examples of colloids (or colloidal solutions)
Which of the following is not an emulsion ?
Milk of Magnesia is :
What is the difference between colloids and suspensions ?
Fill in the following blanks with suitable words :
Immiscible liquids are separated by using a .....................
Fill in the following blanks with suitable words :
The gases of air can be separated by fractional distillation of liquid air because they have different..............
How will you separate a mixture containing sand and sugar ?
Describe a method to separate a mixture of camphor and sand.
Describe a method for separating a mixture of iron filings and sulphur powder other than that by using a magnet.
If there is a sudden shower, we take shelter under a roof at the roadside. Even though the rain does not fall on us directly, we get wet to some extent. Why ?
Diffentiate between absorption and adsorption.
Liquids have ______.
Evaporation is always accompanied by ______ in temperature.
