Answer
a) inorganic
b) organic
c) organic
d) inorganic
Work Step by Step
a) $CaCO_3$ is an inorganic compound because carbonates are considered to be inorganic.
b) $C_4H_8$ is an organic compound because it is made up of carbon, & hydrogen.
c)$C_4H_6O_6$ is an organic compound because it is made up of carbon, oxygen, & hydrogen.
d) $LiF$ is an inorganic compound because it does not contain carbon.
