Question

  Match List I (Name of treatment) with List II (Media used) and select the correct answer using the odes given below the Lists

List-I                                      

A. Pack carburizing

B. Gas carburizing

C. Cyaniding

D. Nitriding

List II

1. Ammonia gas

2. Sodium cyanide

3. Carburizing compound

4. Ethane

Codes;

     A       B         C         D

(a) 3        4          2          1

(b)  2       1          3         4

(c)  3       1          2         4

(d)  2       4          3         1