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प्रश्न
Classify the following into solids, liquids and gases.
Oxygen, milk, common salt, wax, stone, water vapour, carbon-dioxide, sugar, mercury, coal, blood, butter, copper, coconut oil, kerosene.
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उत्तर
| Solids | Liquids | Gases |
| Common salt | Milk | Oxygen |
| Wax | Mercury | Water vapour |
| Stone | Blood | Carbon dioxide |
| Sugar | Coconut oil | |
| Coal | Kerosene | |
| Butter | ||
| Copper |
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संबंधित प्रश्न
Define: Liquid.
Fill in the blank:
The molecules are made up of ________
Differentiate between the following.
Liquids and gases .
Name the phenomenon which causes the Conversion of water into steam is
Match the following columns
| Column A | Column B | ||
| A. | A molecule is composed of | i. | does not exist free in nature. |
| B. | Ice, water and water vapour | ii. | can vibrate only up to about `10^-10`m from their mean position. |
| C. | An atom | iii. | atoms. |
| D. | Gases | iv. | are the three states of water. |
| E. | The molecules of a solid | v. | occupy space |
One litre of water has 6.02 × 1026 molecules. Estimate the size of a molecule.
Describe a simple experiment to illustrate the existence of inter-molecular spacing.
Write whether the following statement is true or false.
A gas has no free surface.
Write scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
Write scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
