What is the standard angle of the point in a center punch used for marking hole locations before drilling?

Match LIST-I with LIST-II regarding the classification of common dyeing defects and their identifying characteristics: LIST-I (Dyeing Defect) A. Barré B. Bleeding C. Crocking D. Tender spots LIST-II (Characteristic) I. Loss of color during contact with water II. Formation of horizontal shaded bands III. Weakening of the textile by chemical exposure IV. Color rubbing off onto other surfaces Choose the correct answer from the options given below:

Match LIST-I with LIST-II regarding the classification and application characteristics of various dye categories. LIST-I (Dye Category) A. Acid Dyes B. Disperse Dyes C. Reactive Dyes D. Direct Dyes LIST-II (Key Application / Feature) I. Form a permanent covalent bond with the fiber polymer II. Applied to hydrophobic synthetics using HTHP techniques III. Applied under acidic conditions for protein fibers like wool IV. Applied to cellulosics with electrolytes; prone to poor wash fastness Choose the correct answer from the options given below: