Match List – I (Unconventional machining process) with List – II (Typical application) and select the correct answer
List – I List – II
A. Electro discharge machining 1. Drilling microholes in very hard metals
B. Electro chemical machining 2. Drilling holes in glass
C. Ultrasonic matching 3. Die sinking
D. Laser beam machining 4. Machining contours
Codes:
A B C D
(a) 4 2 3 1
(b) 3 4 1 2
(c) 4 3 2 1
(d) 3 4 2 1