Why gold and silver are used in jewelry? It is because they are.
a) shiny
b) ductile
c) malleable
d) all of these
Which of the following metal is mixed with gold to make them suitable for making jewelry?
a) iron
b) zinc
c) copper
d) silver
Why the frames and rims of bicycle are made of aluminum?
a) it is strong metal
b) it is light
c) it is conductor
d) both a and b
Which of the following alloy can withstand high temperature and resist corrosion?
a) iron and carbon
b) aluminum, magnesium and zirconium
c) silver and copper
d) copper and zinc
Which of the following alloy is used to make aeroplanes, solar panels and other aerospace technologies?
a) alloy of iron and carbon
b) alloy of aluminum, magnesium and zirconium
c) alloy of silver and copper
d) alloy of copper and zinc
Exercise:
