Which of the following is/are the example/s of homogeneous mixture (impure substance)?
a) mouthwash
b) salt water
c) all alloys
d) all of these
Which of the following is/are the example/s of heterogeneous mixture (impure substance)?
a) Italian salad dressing
b) pizza
c) solid waste dump
d) all of these
Alloys:
An alloy is a mixture of chemical elements of which at least one is a metal.
Steel
is a/an……
a) element
b)
compound
c) mixture
d) molecule
Alloys are……of metals with another element.
a) element
b) compound
c) mixture
d) molecule
Cast iron is an alloy. Which of the following is mixed with iron in it?
a) chromium
b) carbon
c) copper
d) zinc
