Advertisements
Advertisements
Question
Write the name.
Metals which are amphoteric in nature.
Advertisements
Solution
Metals which are amphoteric in nature- Aluminium (Al), zinc (Zn)
APPEARS IN
RELATED QUESTIONS
In the extraction of aluminium: Draw the diagram for the extraction of aluminium.
Which one of the methods given in column I is applied for the extraction of each of the metals given in column II:
| Column I | Column II |
| Electrolytic reduction | Aluminium |
| Reduction with Carbon | Zinc |
| Reduction with Aluminium | Sodium |
| Iron | |
| Manganese | |
| Tin |
Why does aluminium not corrode right through?
Explain given equation, what happens when ZnCO3 is heated in the absence of air?
Which metal is extracted from cinnabar ore?
Which gas is produced during the extraction of aluminium? At which electrode is this gas produced?
Give reasons, why aluminum is used in:
painting electric and telegraphic poles
Distinguish between ‘roasting’ and ‘calcination’. Which of these two is used for sulphide ores and why?
Name the anode, the cathode and the electrolyte used in the electrolytic refining of impure copper.
How an ore is concentrated by froth floatation process?
Complete the incomplete statement with missing word:
Metals form positive ions while non- metals ______.
Name:
The allotrope of the non-metal carbon which conducts electricity.
Name the methods by which concentrated ore is converted to metallic oxide.
Usually ______ ores are subjected to ______ which is done in the absence of air.
Froth floatation process is generally used to concentrate ______ ores.
Iron is _______.
Explain the reactions of nonmetals with water with the help of examples.
Explain the following reaction with the balanced equation.
Zinc carbonate is heated strongly in limited supply of air
Observe the following diagram and write answers.
- Name the method.
- Write anode reaction and cathode reaction.
- Why fluorspar and cryolite are added in the mixture?
