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प्रश्न
Give three ways in which the metal zinc differs from the non-metals carbon. At least one of the differences must be a chemical difference?
उत्तर
The three ways in which metal zinc differs from the non-metal carbon is:
- Zinc has valency 2 and carbon has valency 4.
- Zinc does not form hydride but carbon does (CH4).
- Oxides of zinc are amphoteric (ZnO), whereas oxides of carbon are acidic (CO2) and neutral (CO).
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संबंधित प्रश्न
State the main components of the following alloys:
Brass
How does the painting of an iron object prevent rusting?
Name the following :
Ore of iron referred to as "fool's gold".
Define the term : Ore
Explain the following:
Aluminium is extensively used for making aircraft parts.
Complete and balance the following equation:
Al + KOH + H2O →
Arrange the metals:
calcium, iron, magnesium and sodium in order of their reactivity with water placing the most reactive first.
The following question refer to the extraction of aluminium and iron from their ores:
Iron and aluminum ores both, contain impurities. Explain briefly how these impurities are removed in each case.
A to F below relate to the source and extraction of either zinc or aluminium.
- Bauxite
- Coke
- Cryolite
- Froth floatation
- Sodium hydroxide solution
- Zinc blende
Write the formula of cryolite.
Name the following:
The ore of zinc containing its sulphide.
