Uses of Metals and Alloys
Important Questions on Uses of Metals and Alloys
Choose the most appropriate answer from the following list of oxides which fit the description. Each answer may be used only once :
(i) A basic oxide.
(ii) An oxide which dissolves in water forming an acid.
(iii) An amphoteric oxide.
(iv) A covalent oxide of a metalloid.
Name the property possessed by metals by which they can be beaten into sheets. (malleabillity/ ductility)
State the main components of bronze alloy.
State the main components of duralumin.
State the main components of brass alloy.
Name the following metals :
A metal is present in period 3, group 1 of the periodic table.
Name the following metals :
A metal that is unaffected by dilute or concentrated acids.
Name the following metals :
A metal is present in cryolite other than sodium.
The reason for using aluminium in the alloy duralumin is:
Steel is an alloy of iron and:
Brass is an alloy of:
Both brass and bronze contain copper as major constituents. Name other elements in these alloys.
What is an alloy? How do the properties of an alloy differ from its constituents?
Explain the following:
In construction work, why is the alloy of aluminium-duralumin used rather than pure aluminium?
Explain the following:
Zinc is used to cover iron so as to prevent rusting of iron. Why?
Name the following :
Name an allotrope of a non-metal that allows electricity to pass through it.
Name the following :
A compound which is added to lower the fusion the temperature of the electrolytic bath in the extraction of aluminium.
Name the following :
The compound formed by the reaction between calcium oxide and silica.
Name the following :
The process of heating an ore to a high temperature in the presence of air.
Name the following :
A metal that is always present in amalgam.
