Advertisements
Advertisements
प्रश्न
Choose one term from the following which includes the other three :
aerosol, emulsion, colloid, sol
Advertisements
उत्तर
Colloid includes the other three. Aerosol, sol and emulsions are different types of colloids.
APPEARS IN
संबंधित प्रश्न
Explain why air is used to inflate tyres.
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?
Fill in the following blanks with suitable words :
Brass is an alloy which is considered a ..............
The element which is not common between the compounds called baking soda and soda ash is
One of the following is a solid foam. This one is :
Which one of the following is not a chemical change ?
Describe a method for separating a mixture of iron filings and sulphur powder other than that by using a magnet.
Explain how, impure copper sulphate can be purified by crystallisation.
Explain how, nitrogen , oxygen and argon gases are separated from air.
Which of the following cannot be separated from air by the process of fractional distillation ?
A solid mixture contains four constituents P, Q, R and S. P consists of tiny grains and it is mixed with
cement for plastering the walls. Q is a white solid which is recovered on a large scale from sea water by the
process of evaporation. R is in the form of tiny particles of a material whose corrosion is called rusting. And
S is a white solid which is used in making ordinary dry cells.
- What could P, Q, R and S be ?
- How would you separate a mixture containing P, Q, R and S ?
Explain the meaning of the term ‘matter’.
What's the solution?
We need to make a sherbet quickly for some guests. But we only have sugar candy in the house.
Asmita went to buy an earthen pot. There she saw many things kept for sale.
What is the difference between a substance and an object?
______ is not made of matter.
Which among the following ______ will get attracted to by magnet?
Celsius scale is a scale of temperature in which zero represents the melting point of ice and 100 represents the boiling point of water.
Atoms are tiny particles that repel each other when they are squeezed very close.
______ is used for industrial refrigeration and transporting frozen food.
The fluidity of solids: ______.
