1. The alloy which contains copper as major component is called:
(A) Ferrous alloy
(B) Non-ferrous alloy
(C) Aluminum alloy
(D) Copper alloy
2. The alloy which contains aluminum as a major component is called:
(A) Aluminum alloy
(B) Non-ferrous alloy
(C) Copper alloy
(D) Ferrous alloy
3. The composition of stainless steel is:
(A) Cr 40%, iron 60%
(B) Cr 30%, iron 61–75%
(C) Cr 18–30%, carbon 0.05–1.5%, iron 61–75%
(D) Cr 40%, Cu 60%
4. The composition of amalgam is:
(A) Hg 55%, Zn 45%
(B) Hg 30%, Zn 70%
(C) Hg 70%, Zn 30%
(D) Hg 80%, Zn 20%
5. The composition of solder is:
(A) Lead 70%, Tin 30%
(B) Lead 30%, Tin 70%
(C) Lead 10%, Tin 90%
(D) Lead 67%, Tin 33%
6. In German silver the percentage of silver is:
(A) 10%
(B) 50%
(C) 0%
(D) 66%
7. In which one of the following alloys chromium is not used:
(A) Nichrome
(B) Chrome steel
(C) Bell metal
(D) Stainless steel
8. The alloy in which one component is Hg is called:
(A) Solder
(B) German silver
(C) Bronze
(D) Amalgam
9. Alloy of copper and zinc is called:
(A) Bronze
(B) Brass
(C) Solder
(D) Nichrome
10. Alloy of chromium is called:
(A) German silver
(B) Brass
(C) Solder
(D) Nichrome
11. Bronze is an alloy of copper and:
(A) Aluminum
(B) Stannous (Tin)
(C) Lead
(D) None of these
12. Which one is in larger amount in stainless steel:
(A) Nickel
(B) Iron
(C) Carbon
(D) Chromium
13. Which one of the following is a lead alloy:
(A) Type metal
(B) Brass
(C) Bronze
(D) Gun metal
14. Alloys which contain iron are called:
(A) Amalgam
(B) Ferrous alloy
(C) Non-ferrous
(D) All of these
15. Which one is called stainless steel:
(A) Chromium steel
(B) Nickel steel
(C) Mild steel
(D) All of these