GATE ME 2025 Set 1 — Question 38

MCQ+2 / -0.67EasyMoulds, Cores & Core PrintsCastingManufacturing ProcessesSolidification & Chvorinov's RuleRiser & Gating Design

Manufacturing Processes → Casting → Moulds, Cores & Core Prints

Last updated 5 September 2026

Question

Match the mold elements in the casting process with the most suitable function Mold element Function P Blind riser I Casting with internal cavity Q Chill II Molten metal reservoir R Skim bob III Nucleating agent S Core IV Assisting in faster heat removal from melt T Insulating sleeve V Removal of impurities U Inoculant VI Increasing the solidification time

Mold element	Function
P Blind riser	I Casting with internal cavity
Q Chill	II Molten metal reservoir
R Skim bob	III Nucleating agent
S Core	IV Assisting in faster heat removal from melt
T Insulating sleeve	V Removal of impurities
U Inoculant	VI Increasing the solidification time

Correct answer (A) P-II, Q-IV, R-V, S-I, T-VI, U-III Solution The correct matches are: P (Blind riser): Acts as a II (Molten metal reservoir) to compensate for shrinkage during solidification. Q (Chill): Metallic inserts used for IV (Assisting in faster heat removal from melt) to promote directional solidification. R (Skim bob): A trap in the gating system for the V (Removal of impurities) like slag or dross. S (Core): Used for I (Casting with internal cavity) . T (Insulating sleeve): Placed around the riser for VI (Increasing the solidification time) of the riser metal. U (Inoculant): Added to the melt as a III (Nucleating agent) to refine the grain structure. Matching sequence: P-II, Q-IV, R-V, S-I, T-VI, U-III. Turn this into a strength. Explore AI-powered practice and doubt support with Success Tracker.

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Correct answer (A) P-II, Q-IV, R-V, S-I, T-VI, U-III Solution The correct matches are: P (Blind riser): Acts as a II (Molten metal reservoir) to compensate for shrinkage during solidification. Q (Chill): Metallic inserts used for IV (Assisting in faster heat removal from melt) to promote directional solidification. R (Skim bob): A trap in the gating system for the V (Removal of impurities) like slag or dross. S (Core): Used for I (Casting with internal cavity) . T (Insulating sleeve): Placed around the riser for VI (Increasing the solidification time) of the riser metal. U (Inoculant): Added to the melt as a III (Nucleating agent) to refine the grain structure. Matching sequence: P-II, Q-IV, R-V, S-I, T-VI, U-III.

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