Brass is an alloy of copper and …….
a) chromium
b) carbon
c) copper
d) zinc
The food we eat and the air we breathe are examples of ………………...
a) elements
b) compounds
c) mixtures
d) molecules
Milk is a/an………………...
a) element
b) compound
c) mixture
d) molecule
Concrete road is a/an………
a) element
b) compound
c) mixture
d) molecule
Black coffee is a/an………...
a) heterogeneous mixture
b) compound
c) homogeneous mixture
d) element
Vinegar
is a homogenous mixture of water and
a) table salt
b)
sugar
c) caustic soda
d) acetic acid
