Hastelloy
Duriron
Monel
Inconel
✅ 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.
2022. Which metal is protected by the layer of its own oxide?
Iron
Silver
Calcium
Aluminium
✅ The correct answer is option D.
2023. Muntz metal is a/an alloys of
Magnesium & tin
Ferrous material
Lead & tin
Copper & zinc
✅ The correct answer is option D.
2024. Invar contains the highest percentage of
Vanadium
Iron
Tungsten
Cobalt
✅ The correct answer is option B.
2025. Carbon percentage is the same in cast iron and
Wrought iron
Pig iron
Mild steel
High silicon (14%) iron
✅ The correct answer is option B.
2026. Which of the following would not be a suitable material of construction for handling aqueous hydrofluoric acid (HF) at 100°C ?
Monel
Stainless steel
Graphite
Kel-F and teflon
✅ The correct answer is option B.
2027. The loss of strength in compression which occurs, when there is a gain of strength in tension due to over loading is called
Bauschinger effect
Hooke’s effect
Hysterisis
Relaxation
✅ The correct answer is option A.
2028. Combination of metals and ceramics are called
Metalloy
Cermets
Pellets
Non-crystalline ceramics
✅ The correct answer is option B.
2029. Locomotive boiler tubes are made of __________ alloys.
Arsenic copper
Magnesium
Aluminium
Nickel
✅ The correct answer is option A.
2030. Inconel is an alloy of
Tin, zinc and nickel
Iron, nickel and chromium
Copper and nickel
Copper and tin
✅ The correct answer is option B.