Advertisements
Advertisements
प्रश्न
What is Brownian motion? Draw a diagram to show the movement of a particle (like a pollen grain during Brownian motion.
Advertisements
उत्तर
The zigzag movement of the small particles suspended in a liquid or a gas is called Brownian motion.
APPEARS IN
संबंधित प्रश्न
Intermolecular space is maximum in .......... less in ............ and the least in .........
Match the following
| Column A | Column B | ||
| (a) | Molecules | (i) | Water boils |
| (b) | 100° C | (ii) | Evaporation |
| (c) | 0° C | (iii) | Changes from solid to gas |
| (d) | At all temperatures | (iv) | Matter |
| (e) | Camphor | (v) | Water freezes |
Name the terms for the particles of matter which may or may not have independent existence.
State two characteristics of matter demonstrated by Brownian motion.
During respiration, glucose and oxygen enter our body cells and waste products carbon dioxide and water leave the body cells by the process of :
Name a metal which is soft and a non-metal which is hard.
Explain why, hydrogen and oxygen are considered elements whereas water is not considered an element.
Out of a colloid, solution and a suspension :
which one has the smallest particles ?
Which of the two will scatter light : soap solution or sugar solution ? Why ?
State whether the following statement is true or false :
Bread is an example of solid foam.
State whether the following statement is true or false :
Sponge is an example of solid sol.
Name the different types of solutions. Give one example of each.
What is a colloid ? Give two examples of colloids (or colloidal solutions)
Fill in the following blanks with suitable words :
The separation of liquids by fractional distillation is based on the difference in their .....................
How will you separate a mixture of iron filings and powdered carbon ?
How will you separate camphor, common salt and iron nails from their mixture ?
Diffentiate between absorption and adsorption.
Which among the following is not a matter?
______ is so hard that it can scratch glass.
The pressure of gases does not depend on the temperature of the gas and the volume it occupies.
