A. Stainless steel
B. Titanium
C. Lead
D. Aluminium
✅ The correct answer is option C.
Engineering MCQs
The predominant mode of heat transfer which takes place from boiler furnace to water walls of a boiler is
A. Conduction
B. Convection
C. Both A & B
D. Radiation
✅ The correct answer is option D.
The rolling process can not be used to produce
A. Plates
B. Rods
C. Tubes
D. Wires
✅ The correct answer is option C.
Powder metallurgy processing can be used for making
A. Dispersion strengthened copper rod
B. Self lubricating bearing and cemented carbide
C. Connecting rod
D. Piston
✅ The correct answer is option B.
Cold chiesel & hammers are made of
A. High speed steel
B. High carbon steel
C. Forged steel
D. Mild steel
✅ The correct answer is option B.
Limestone addition in the blast furnace is done to flux __________ present in the raw materials.
A. SiO₂
B. Al2O₃
C. MnO₂
D. P
✅ The correct answer is option A.
Which of the following is an undesirable property of slag produced during the pyrometallurgical method of metal extraction from its ore?
A. High fusibility & fluidity
B. High thermal conductivity
C. Low density
D. High chemical activity
✅ The correct answer is option B.
The maximum percentage of chromium that can be added to steel is about
A. 12
B. 18
C. 24
D. 30
✅ The correct answer is option B.
The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling below 400°C is
A. Magnesite
B. Chrome
C. Silica
D. Fireclay
✅ The correct answer is option C.
Compressed dry air is used as the cutting fluid, while machining
A. Steel
B. Cast iron
C. Aluminium
D. None of these
✅ The correct answer is option B.