Prevent its rusting by contact with corrosive atmosphere
Protect the base metal by cathodic protection
Both A & B
Neither A nor B
✅ The correct answer is option C.
Engineering
Boost your preparation with the latest Engineering MCQs with answers and explanations. Our collection covers civil engineering, electrical engineering, mechanical engineering, electronics, software engineering, and other core subjects. These multiple-choice questions are designed for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, CSS, PMS, PEC exams, university entry tests, and job interviews. Practice online with updated Engineering MCQs to strengthen concepts, improve technical knowledge, and perform better in exams and recruitment tests.
1692. Steel balls for ball bearings are generally made of __________ steel.
Cast
Stainless
Free carbon
Carbon chrome
✅ The correct answer is option D.
1693. Which of the following will have the highest melting point?
Pig iron
Mild steel
Wrought iron
High carbon steel
✅ The correct answer is option C.
1694. __________ moulding process can not be used for thermoplastic plastics.
Compression
Extrusion
Injection
None of these
✅ The correct answer is option C.
1695. Nickel is a __________ material.
Ferromagnetic
Diamagnetic
Paramagnetic
None of these
✅ The correct answer is option A.
1696. Cast iron vessels are not suitable for the storage of
Freon
Hâ‚‚SOâ‚„ (95%) at room temperature
Hâ‚‚SOâ‚„ (fuming)
Wet SOâ‚‚
✅ The correct answer is option D.
1697. Mercury is transported in metal containers made of
Aluminium
Iron
Lead
Nickel
✅ The correct answer is option B.
1698. Molybdenum steels containing 0.15 to 0.40% molybdenum
Are prone to temper brittleness
Are used for automobile parts like gears, axle, shaft, bearings etc
Have very poor fatigue resistance
Do not contain nickel or chromium or both
✅ The correct answer is option B.
1699. Most suitable material for high pressure vessel operating at 500 atm. and 500° C is
Molybdenum stainless steel
18/8 stainless steel
Mild steel
High silicon iron (14% Si)
✅ The correct answer is option A.
1700. Addition of __________ in steel can help in increasing the depth of hardness.
Nickel
Chromium
Vanadium
Tungsten
✅ The correct answer is option D.