Most of the candidates who attempted this question performed excellently well in part (a) of the question.  However, part (b) and (c) were not properly answered by the candidates.  The required answers to these parts are:
(b)        Grades of cut of files are:
-           bastard;
-           second cut;
-           rough;
-           smooth;
-           dead smooth.

                        (c)        Quenching media in heat treatment are:
-           paraffin;
-           water;
-           oil;
-           brine;
-           caustic soda.