A. Copper, nickel and zinc
B. Copper, aluminium and silver
C. Silver, zinc and aluminium
D. Silver, nickel and zinc
Related Mcqs:
- Percentage of silver in German silver is__________________?
A. 5
B. 10
C. 20
D. 0 - German silver is an alloy of copper, nickel and________________?
A. Zinc
B. Silver
C. Tin
D. Lead - German silver used for decorative purposes contains maximum percentage of___________________?
A. Silver
B. Copper
C. Zinc
D. Nickel - Platinum and silver are corroded by___________________?
A. Caustic soda solution
B. Phosphoric acid
C. Sulphuric acid (10%)
D. None of these - Softness of silver can be converted into hardness by alloying it with small quantity of_________________?
A. Copper & nickel
B. Zinc
C. Aluminium
D. Tin - Bell metal is an alloy of __________________?
A. Copper & zinc
B. Copper & tin
C. Copper & nickel
D. Zinc & tin - An alloy of iron containing 4% carbon is called________________?
A. High carbon steel
B. Wrought iron
C. Mild steel
D. None of these - A steel alloy containing 36% nickel is called _____________________, which has a zero co-efficient of expansion?
A. Austenitic stainless steel
B. Heat resisting steel
C. Invar
D. High speed steel - Brass is an alloy of____________________?
A. Nickel and tin
B. Copper and zinc
C. Tin and lead
D. Copper, nickel and zinc - Constantan is an alloy of____________________?
A. Cu (55%) & Sn (45%)
B. Cu (55%) & Ni (45%)
C. Pt (95%) & Rh (10%)
D. Fe (80%) & Ni (20%)
