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प्रश्न
State a specific reason for using copper in electrical cables
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उत्तर
Copper is used in electrical cables because it is a good conductor of electricity.
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संबंधित प्रश्न
State one use of the following metal:
Aluminium
State one use of the following metal:
Gold
The atomic number of an element Y is 16.
- What must an atom of Y do to achieve the nearest inert gas electron arrangement?
- Which inert gas is nearest to Y?
Give the composition of an alloy called solder. State its one property and one use.
What is an amalgam?
For the reduction of a metal oxide, suggest a reducing agent other than carbon.
Mention two uses of the following metals and non-metals
Gold
Mention two uses of the following metals and non-metals
Oxygen
Aluminium is not used to make :
Tick (√) the most appropriate answer.
Graphite is used :
Molecular formula of the chloride of an element X is XCl. This compound is a solid having high melting point. Write name of any element present in the same group as X
What is it made from? Why?
Electric cables
Aluminium: _______: gold : : electric insulator
Name two major non-metals which are present in fertilisers and enhance the growth of plants.
The liquid metal at room temperature ______.
Metals and non–metals are used for making ______, ______ and ______.
The typical shine of metals is called ______.
Match the following
| i. | Softest metal | a. | Copper |
| ii. | Hardest metal | b. | Sodium |
| iii. | Hardest non–metal | c. | Osmium |
| iv. | Ductility | d. | Diamond |
Why are metalloids called semimetals?
