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प्रश्न
With reference to the following metal state its use in daily life:
Magnesium
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उत्तर
- It is used in fireworks as it burns with a dazzling light.
- Photography: Magnesium produces a bright flash. It is used in strip form.
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संबंधित प्रश्न
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?
What is an amalgam?
What is an alloy?
Mention two uses of the following metals and non-metals
Aluminium
Mention two uses of the following metals and non-metals
Oxygen
Write ‘True’ or ‘False’ in front of following statement.
Magnesium is used in making light weight alloys of aluminium.
State two important uses of following metal
Uses of mercury
What was Mendeleev's basis for the classification of elements?
What is it made from? Why?
A pair of tongs.
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
A white crystalline solid which decrepitates on heating leaving a residue which fuses with the glass and evolves two gases one of which is coloured and acidic.
Why are bells made of metals?
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.
Give an example of a metal which
- is liquid at room temperature.
- is the best conductor of heat.
In the following figure, you find that the bulb glows when an iron nail is placed between two ends of wire. Complete the following sentences on the basis of this fact.
- ______ is a metal.
- Metals are good ______ of electricity.
The metal can be cut with a knife ______.
Metals and non–metals are used for making ______, ______ and ______.
Silver and copper are very good conductors of electricity.
Match the following
| i. | Silica | a. | Caustic potash |
| ii. | Potassium hydroxide | b. | Sand |
| iii. | Sodium hydroxide | c. | Calamine |
| iv. | Zinc carbonate | d. | Caustic soda |
