A. Aluminium
B. Noble metals (Ag, Pt, Au)
C. Zinc
D. Alkali metals (K, Na, Li)
Related Mcqs:
- The metals occuring at the lower most position in the electromotive series____________________?
A. Do not resist corrosion
B. Resist corrosion very strongly
C. Are very brittle
D. Are heat insulators - Metal at the top of the electromotive series is________________?
A. Least active
B. Most stable
C. Most active
D. Most noble - Most of the common metals have ______________ crystal structure?
A. Cubic
B. Hexagonal
C. Orthorhombic
D. None of these - Non-ferrous metals and hard steels do not exhibit a definite yield point, when pulled in the testing machine and hence for these cases, a better measure of their elastic properties is defined by the ______________ stress?
A. Ultimate
B. Yield point
C. Proof
D. None of these - Combination of metals and ceramics are called___________________?
A. Metalloy
B. Cermets
C. Pellets
D. Non-crystalline ceramics - Slow plastic deformation of metals under a constant stress is termed as _____________ failure?
A. Fatigue
B. Endurance
C. Creep
D. None of these - Atmospheric corrosion of metals result from their________________?
A. Slow oxidation
B. Fast oxidation
C. Fast hydration
D. Slow dehydration - Babbitt metals used for making bearings are _________________?
A. Tin or lead based alloys
B. Short of antifrictional properties
C. Having homogenous microstructure
D. Yellow metals - Which of the following is the lightest of engineering metals ?
A. Magnesium
B. Aluminium
C. Titanium
D. Tin - Hydrochloric acid is _______________ corrosive to common metals?
A. Least
B. Not
C. Mildly
D. Highly
