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प्रश्न
Name a non-metal which can form a positive ion.
उत्तर
Hydrogen
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संबंधित प्रश्न
Fill in the blanks:
Metals are ________ conductors of heat and _________.
Fill in the blanks:
Iron is ________ reactive than copper.
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 |
Why is ammonia gas not collected over water?
Name one metal which has a low melting point.
Which property of copper and aluminium makes them suitable for making electric wires?
Name one property which is characteristic of non-metals.
Name two metals which react violently with cold water. Write any three observations you would make when such a metal is dropped into water.
Name the metals present in the following alloys
Stainless steel
`Mg +H_2SO_4 → —+ — `
