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प्रश्न
Give reasons
Magnesium is used in fire works.
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उत्तर
Magnesium is used in fire works because it bums with a dazzling light.
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संबंधित प्रश्न
State one use of the following metal:
Silver
For the reduction of a metal oxide, suggest a reducing agent other than carbon.
Mention two uses of the following metals and non-metals
Iodine
Give reasons
Gold is mixed with copper and nickel.
Write ‘true’ or ‘false’ for the following statement :
Silver is used to make electric cables.
State two important uses of following metal:
Uses of aluminium
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Oxygen
Write name.
Molecular formula of the common ore of aluminium.
What was Mendeleev's basis for the classification of elements?
With reference to the following metal state its use in daily life:
Magnesium
Write scientific reason.
Meena’s mother uses lemon or tamarind for cleaning copper vessels turned greenish.
The most abundant element in the universe is ____________.
Which of the following two combinations are correct?
| Metal | Gas Evolved | |
| (i) | Copper | Yes |
| (ii) | Iron | Yes |
| (iii) | Magnesium | No |
| (iv) | Zinc | Yes |
The ability of metals to be drawn into thin wire is known as
Which one of the following metals do not react with cold as well as hot water?
Which one of the following four metals would be displaced from the solution of its salts by other three metals?
An element forms an oxide A2O3 which is acidic in nature. Identify A as a metal or non-metal.
Name two major non-metals which are present in fertilisers and enhance the growth of plants.
Silver and copper are very good conductors of electricity.
Why are metalloids called semimetals?
