Jee Mains Metallurgy Previous Year Question Paper with Solutions Pdf - 2

Question: 6

Hexamethylene tetramine is added to the resin sand as a

(A) Catalyst

(B) Releasing agent

(C) Binder

(D) Dispersant

Question: 7

For a continuous casting method,, generally graphite moulds are used, due to fact that

(A) A very thin film of lubricant is required

(B) They are cheaper

(C) The metal wets the mould slightly

(D) They are self lubricating

Question: 8

Which of the following is a destructive test conducted for castings?

(A) Wear resistance test

(B) Magnetic particle test

(C) Ultrasonic test

(D) Dye penetration test

Question: 9

Misrun is a casting defect, which occurs due to

(A) Absorption of gases by liquid metal

(B) Improper alignment of the mould flasks

(C) Insufficient fluidity of the molten metal

(D) Very high pouring temperature of the metal

Question: 10

_____ is used for smoothing and cleaning out depression in the mould.

(A) Riddle

(B) Lifter

(C) Swab

(D) Slick