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प्रश्न
Iron is _______.
विकल्प
more reactive than zinc
more reactive than aluminium
less reactive than copper
less reactive than aluminium
उत्तर
Iron is less reactive than aluminium.
APPEARS IN
संबंधित प्रश्न
In the extraction of aluminium: Name the process of concentration of bauxite.
Define the Ore.
Metallic oxides of zinc, magnesium and copper were heated with the following metals.
| Metal | Zinc | Magnesium | Copper |
| Zinc oxide | – | – | – |
| Magnesium oxide | – | – | – |
| Copper oxide | – | – | – |
In which cases will you find displacement reactions taking place?
Give reasons.
Aluminium is a highly reactive metal, yet it is used to make utensils for cooking.
In the extraction of aluminium Write the cathode reaction in electrolytic reduction of alumina.
Name two metals which are highly resistant to corrosion.
Name the method by which aluminium metal is extracted.
Give the name of one ore of iron. Which iron compound is present in this ore? Write its chemical formula.
Some metallic oxides can be reduced by hydrogen, carbon and carbon monoxide and some cannot. Explain.
Give reasons, why aluminum is used in:
painting electric and telegraphic poles
Give reasons, why aluminum is used in:
In making ships
An element has its electron configuration as 2,8,8,2. Now answer the following questions.
a) What is the atomic number of this element?
b) What is the group of this element?
c) To which period does this element belong?
How are metals refined by the electrolytic methods?
What is passive iron?
Complete the incomplete statement with missing words:
Metals are ______ while non-metals are ______ conductors of heat.
Name:
The allotrope of the non-metal carbon which conducts electricity.
How many valence electrons are present in metals ?
If Cu, Fe, Zn, Al elements are arranged in increasing order of their reactivity then the correct order would be which of the following?
Explain the following reaction with the balanced equation.
Zinc sulphide is heated strongly in excess of air
Explain in brief types of extraction of less reactive metals according to their reactivity.
