We need to match glass forming processes with their products.
First, consider blowing.
Blowing is commonly used to make hollow glass articles such as bottles.
So:
\[
a)\ \text{Blowing} \rightarrow ii)\ \text{Bottles}.
\]
Now consider floating.
In the float glass process, molten glass floats on molten tin.
This process is used to produce flat glass sheets.
So:
\[
b)\ \text{Floating} \rightarrow iii)\ \text{Sheet glass}.
\]
Now consider pressing.
Pressing is used for articles like plates, dishes, bowls, and table ware.
So:
\[
c)\ \text{Pressing} \rightarrow iv)\ \text{Table ware}.
\]
Now consider drawing.
Drawing is used to produce continuous forms such as tubes and rods.
So:
\[
d)\ \text{Drawing} \rightarrow i)\ \text{Tubes}.
\]
Therefore, the correct matching is:
\[
a\text{-}ii,\quad b\text{-}iii,\quad c\text{-}iv,\quad d\text{-}i.
\]