Step 1: Match each term in List-I with its most appropriate association in List-II.
(A) Slip casting is a method in ceramics that uses liquid clay, known as slip. Thus, (A) matches (IV) Clay.
(B) A pitcher is a heavy, pointed hammer used for the initial rough shaping of blocks in stone masonry. Thus, (B) matches (III) Stone.
(C) De-waxing is the process of melting wax out of a mold, a critical step in investment casting. The investment mold material is often a refractory ceramic, which can be made with materials like (I) Silicon Carbide to withstand high temperatures. This is a plausible technical match.
(D) A Crucible is a pot used to melt metals for casting. Thus, (D) matches (II) Metal casting.
Step 2: Form the complete matched sequence.
The correct sequence of matches is (A)-(IV), (B)-(III), (C)-(I), (D)-(II). This corresponds to option (4).