Advertisements
Advertisements
प्रश्न
What are the conditions for 'something' to be called 'matter'?
Advertisements
उत्तर
The main conditions for something to be matter are, it should:
- occupy space and
- have mass
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 |
During respiration, glucose and oxygen enter our body cells and waste products carbon dioxide and water leave the body cells by the process of :
Which type of elements, metals or non-metals, show the property of brittleness ?
What are the two types of pure substances? Give one example of each type.
What are the three groups into which all the elements can be divided ? Name two elements belonging to each group.
State two physical properties on the basis of which metals can be distinguished from non-metals.
One of the following substances is neither a good conductor of electricity nor an insulator. This substance is :
How will you differentiate between a suspension and a colloid ?
Define Aerosol Give one example.
Define solubility of a substance. How does it vary with temperature ?
The solubility of ammonium chloride in water at various temperatures is given below :
| Temperature | : | 10°C | 20°C | 40°C | 60°C | 80°C |
| Solubility | : | 24 g | 37 g | 41 g | 55 g | 66 g |
What mass of ammonium chloride would be needed to make a saturated solution of ammonium chloride in fifty grams of water at 40°C ?
Which technique is used in a washing machine to squeeze out water from wet clothes while drying ?
Fill in the following blanks with suitable words :
If a mixture contains iron filings as one of the constituents, it can be separated by using a .......................
How will you separate iron pins from sand ?
Which of the following cannot be separated from air by the process of fractional distillation ?
What's the solution?
We need to make a sherbet quickly for some guests. But we only have sugar candy in the house.
Matter is made up of ______.
Liquids have ______.
The fluidity of solids: ______.
