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
Explanation: Alloys are mixtures of metals with another elements either metal or non-metals
Cast iron is an alloy. Which of the following is mixed with iron in it?
a) chromium
b) carbon
c) copper
d) zinc
Explanation:Cast iron is a class of iron carbon alloys with a carbon content more than 2%.
