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प्रश्न
What is meant by "brittleness"? Which type of elements usually show brittleness: metals or non-metals?
उत्तर
Brittleness is the property of being broken easily. Non-metals are the elements that usually show brittleness.
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संबंधित प्रश्न
Some properties are listed in the following Table. Distinguish between metals and non-metals on the basis of these properties
| Properties | Metals | Non-metals |
| 1. Appearance | Lustrous | Dull |
| 2. Hardness | Hard | Soft |
| 3. Malleability | Can be beaten into thin sheets | Cannot be beaten into thin sheets |
| 4. Ductility | Can be drawn into wires | Cannot be drawn into wires |
| 5. Heat Conduction | Good conductors of heat | Poor conductors of heat |
| 6. Conduction of Electricity | Good conductors of electricity | Poor conductors of electricity |
Name two metals which are used for making electric wires.
What are metals? Name five metals.
Name a non-metal which is extremely hard.
Name a metal as precious as gold
State any five physical properties of a metal.
Physical properties of a metal :
State the composition of given alloy:
Bronze
Which metal occurs as a carbonate also gives the name of their respective ore.
Complete the statement given below, by filling in the blank with the correct word:
A non-metal that leaves a mark on paper _______
Match the columns.
| Group A | Group B |
| 1. Making sheets of metals | a) Sonority |
| 2. Making metal utensils | b) Malleability |
| 3. Making Copper wires | c) Good conductor of heat |
| 4. Making bells from metal | d) Ductility |
