Steel is an alloy of iron and…….
a) carbon
b) copper
c) silicon
d) tin
Brass is an alloy of copper and ……..
a) carbon
b) zinc
c) silicon
d) tin
Bronze is an alloy of copper and ……..
a) carbon
b) zinc
c) silicon
d) tin
Why many pots and pans are made of steel instead of pure iron? Because pure iron is……
a) soft and flexible
b) hard
c) high melting and boiling point
d) none of these
Why steel is used to make kettles and frying pans?
a) steel has high melting and boiling point
b) it does not corrode
c) it is poor conductor of heat
d) both a and b
Which of the following is/are used in jewelry?
a) gold
b) silver
c) iron
d) both a and b
