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प्रश्न
Arrange the metals:
calcium, iron, magnesium and sodium in order of their reactivity with water placing the most reactive first.
उत्तर
Reactivity of metals with water Sodium, calcium, magnesium, iron
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संबंधित प्रश्न
How is the main ore of aluminium concentrated?
Identify the pairs of metals and their ores from the following.
| Group A | Group B |
| a. Bauxite | i. Mercury |
| b. Cassiterite | ii. Aluminium |
| c. Cinnabar | iii. Tin |
Give reason for the following:
A neutral gas other than oxygen is formed at the anode during electrolysis of fused alumina.
Define the term : Charge
Write the name and formula of two ores of the following: Aluminium
Give composition and uses of the following alloys. Mention the reason for its use.
Brass
Give composition and uses of the following alloys. Mention the reason for its use.
Solder
Give the name and formula of an ore of zinc.:
Roasting of the ore
What is an alloy? An alloy usually has some property which makes it useful in a specific way.
What is the special property of: Duralumin
This is not an alloy of copper:
