Advertisements
Advertisements
प्रश्न
Fill in the blank
Any matter which has a definite _______ but no definite shape is called a _______
Advertisements
उत्तर
Any matter which has a definite volume but no definite shape is called a liquid.
APPEARS IN
संबंधित प्रश्न
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 |
What are molecules ?
When a crystal of potassium permanganate is placed in a beaker, its purple colour spreads throughout the water. What does this observation tell us about the nature of potassium permanganate and water?
There is a large group of materials P which can be divided into three groups Q, R and S on the basis of their properties. The substances belonging to group Q can be solids, liquids or gases. The solids belonging to group Q are usually electrical insulators. Most of the substances of group R are solids which are good conductors of electricity. The substances belonging to group S are neither insulators like Q nor good conductors like R. The properties of S are intermediate between those of Q and R.
- What could the group of materials P be ?
- Name the substances Q. Give two examples of such substances.
- Name the substances R. Write two examples of such substances.
- Name the substances S. Give two examples of such substances.
- Out of Q, R and S, which substances are malleable and ductile ?
State whether the following statement is true or false :
Sponge is an example of solid sol.
You have been given a suspension and a solution. How could you tell the difference between them by their appearance ?
21.5 g of sodium chloride dissolves in 60 g of water at 25°C. Calculate the solubility of sodium chloride in water at that temperature.
Which of the following represents the solubility of sugar in water at 20°C ?
How is cream separated from milk ?
Explain how, nitrogen , oxygen and argon gases are separated from air.
The best way to recover sugar from an aqueous sugar solution is :
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 ?
Complete the given analogy.
Murukku from hot oil: ______:: Coffee powder residue from decoction: ______
Define the term matter.
The particles in the matter are extremely small and can be seen even with a powerful microscope.
You want to wear your favourite shirt to a party, but the problem is that it is still wet after a wash. What steps would you take to dry it faster?
Solids do not flow.
Gases do not diffuse very easily.
Define the term matter.
Define the term matter.
