1.         (a)       State two safety precautions to be observed when using a tool grinder.
                       
                        (b)       State one use each of the following in metal production:
                                   

1. limestone;
2. alloying elements.

(c)        List three solvents used for finishes.

(d)       (i)         List the three grades of cut of file;
(ii)        Arrange how the three grades of cut of file listed in d(i) can be used to complete a workpiece.