A. Increase
B. Decrease
C. Remain same
D. May increase or decrease ; depending on the type of metal
✅ The correct answer is option B.
Basic Chemical Engineering MCQs
The following type of bonding is strongly directional in solids.
A. Vander Waal’s
B. Ionic
C. Metallic
D. Covalant
✅ The correct answer is option D.
Acetylene should never be conveyed through __________ pipe, as it forms an unstable compound that dissociates violently at the slightest shock.
A. Stainless steel
B. Copper
C. Aluminium
D. Brass
✅ The correct answer is option B.
Which of the following has the least value of ultimate tensile strength (UTS)?
A. Medium carbon steel
B. High carbon steel
C. Cast iron
D. Wrought iron
✅ The correct answer is option B.
Magnesium is present in
A. Haemoglobin
B. Chlorophyll
C. Hypo solution
D. None of these
✅ The correct answer is option B.
The most suitable material for die casting is
A. Iron
B. Copper
C. Steel
D. Nickel
✅ The correct answer is option B.
Solution loss reaction occurs
A. In the blast furnace shaft
B. During pretreatment of hot metal
C. In the L.D. process
D. During deoxidation in the ladle
✅ The correct answer is option A.
Magnesium addition to cast iron increases its
A. Corrosion resistance
B. Creep strength
C. Ductility and strength in tension
D. Hardness
✅ The correct answer is option C.
Increasing sulphur content in pig iron tends to make it
A. Soft
B. Hard
C. Tough
D. Ductile & malleable
✅ The correct answer is option B.
A material having good damping property is likely to have
A. Greater defect density
B. Fine grained structure
C. Lesser defect density
D. High tensile strength
✅ The correct answer is option A.