Percentage of silver in German silver is__________________?

Related Mcqs:

1. German silver used for decorative purposes contains maximum percentage of___________________?

   A. Silver
   B. Copper
   C. Zinc
   D. Nickel

2. German silver is an alloy of copper, nickel and________________?

   A. Zinc
   B. Silver
   C. Tin
   D. Lead

3. German silver in an alloy of________________?

   A. Copper, nickel and zinc
   B. Copper, aluminium and silver
   C. Silver, zinc and aluminium
   D. Silver, nickel and zinc

4. Platinum and silver are corroded by___________________?

   A. Caustic soda solution
   B. Phosphoric acid
   C. Sulphuric acid (10%)
   D. None of these

5. Softness of silver can be converted into hardness by alloying it with small quantity of_________________?

   A. Copper & nickel
   B. Zinc
   C. Aluminium
   D. Tin

6. Invar contains the highest percentage of___________________?

   A. Vanadium
   B. Iron
   C. Tungsten
   D. Cobalt

7. Which one contains the least percentage of carbon ?

   A. Wrought iron
   B. High speed steel
   C. Cast iron
   D. Pig iron

8. The maximum percentage of chromium that can be added to steel is about____________________?

   A. 12
   B. 18
   C. 24
   D. 30

9. Which of the following has the least carbon percentage ?

   A. Low carbon steel
   B. Mild steel
   C. Wrought iron
   D. White cast iron

10. Carbon percentage in medium carbon steel is around__________________?

    A. 0.1 to 0.35
    B. 0.35 to 0.5
    C. 0.8 to 1.4
    D. 1 to 1. 5