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प्रश्न
Matter in any state is composed of particles. Compare the three states of matter i,e. solids, liquids, and gases with reference to:
(a) intermolecular space
(b) the intermolecular force of attraction
(c) movement of particles
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उत्तर
| Characteristics | Solids | Liquids | Gases |
| Intermolecular space | Minimum space | More than solids | Maximum space |
| Intermolecular force of attraction | Very strong | Less strong | Very weak |
| movement of particles | About their own position | In continuous motion | In any random direction |
संबंधित प्रश्न
Give two reasons to justify that An iron almirah is a solid.
What are fluids? Give two examples
Fill the following chart showing twelve solids, twelve liquids, four gases and eight materials.
Complete the statement given below by selecting the correct word.
Solids and liquids have a definite ____ but gases do not.
State the property of the following substance.
Manganese dioxide, a catalyst which alters the rate of a chemical reaction is black in colour.
Complete the given analogy.
Solid: Rigidity:: Gas: ______
Match the following.
| Srl. no. | A | B | C |
| i | Separation of visible undesirable components | Water mixed with chalk powder | Magnetic Separation |
| ii | Separation of heavier and lighter components | Sand and water | Decantation |
| iii | Separation of insoluble impurities | Iron impurities | Filtration |
| iv | Separation of magnetic components from non-magnetic components | Rice and stone | Hand-picking |
| v | Separation of solids from liquids | Husk and paddy | Winnowing |
Choose the odd one:
Define the term ‘Diffusion’.
A strong current of trivalent gaseous boron passed through a silicon crystal decreases the density of the crystal due to part replacement of silicon by boron and due to interstitial vacancies created by missing Si atoms. In one such experiment, one gram of silicon is taken and the boron atoms are found to be 1000 ppm by weight, when the density of the Si crystal decreases by 12%. The percentage of missing vacancies due to silicon, which are filled up by boron atoms will be ____ g. [Given · Atomic wt. Si= 30, B = 11]
