SQL & PL/SQL :: Tracking Exception In One Single Block For Three Different Select Statement?

how can i track the exception for three select statement in one pl-sql block. here is synario.......

begin
select * from emp where empno=1234; --statement 1
select * from cusotmers where cust_id=125; --statement 2
select * from products where product_id='a-3'; --statement 3
end;

i want to track exception any one for ex no_data_found for all these three different statement.

I know if i put this three statement in three different pl-sql sublock then i can trap it....

how can i trap it in one single block?