General Properties of Gases
General Properties of Gases
The Gaseous State
In gases, the intermolecular force of attraction is so weak and the intermolecular space is so large that the particles become completely free to move randomly in the entire available space.
General Properties of Solids
1. Shape and Volume: a gas has neither a definite shape nor a definite volume. It takes the shape and volume of the vessel in which it is kept. It occupies all the available space in the vessel because the particles can freely move throughout the space.
2. Density: the density of gases is lower than those of solids and liquids.
3. Melting and boiling points: at normal atmospheric pressure, the melting and boiling points of a gas are below room temperature. They are lower than those of solids and liquids.
4. Compressibility: the compressibility of a gas is very high. The intermolecular space in a gas being large, the particles can be made to come much closer together under pressure. That is why a large amount of air can be pumped into the small volume of a cycle tube or a football bladder. The property of compressibility of gases is made use of in storing fuel gases in cylinders. Butane is called a petroleum gas as it is obtained from petroleum refineries. Butane has been found to be an efficient domestic fuel. It is liquefied under pressure, packed in cylinders and made available for usage as LPG (Liquefied Petroleum Gas). Oxygen supplied to hospitals in cylinders is another example of compressed gas. So is Compressed Natural Gas (CNG), the fuel which is now increasingly being used in vehicles.
The form of matter which neither has a definite shape nor a fixed volume is called _________________ | |||
| Right Option : C | |||
| View Explanation | |||
Full form of CNG is | |||
| Right Option : C | |||
| View Explanation | |||
CNG stands for _______________ | |||
| Right Option : B | |||
| View Explanation | |||
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