Chapter 27: Metals and Metallurgy – Important MCQs
- Which of the following is the best conductor of electricity?
A. Copper
B. Silver
C. Gold
D. Iron
✔️ Answer: B. Silver - Which metal is the most reactive among the following?
A. Copper
B. Gold
C. Sodium
D. Silver
✔️ Answer: C. Sodium - Which non-metal is essential for life in all living beings?
A. Nitrogen
B. Carbon
C. Oxygen
D. Phosphorus
✔️ Answer: B. Carbon - The process of coating iron with zinc to prevent rusting is called:
A. Electroplating
B. Galvanization
C. Alloying
D. Anodizing
✔️ Answer: B. Galvanization - Which of the following metals is stored in kerosene?
A. Sodium
B. Iron
C. Zinc
D. Copper
✔️ Answer: A. Sodium - Bronze is an alloy of:
A. Copper and Zinc
B. Copper and Tin
C. Iron and Carbon
D. Aluminium and Copper
✔️ Answer: B. Copper and Tin - Which of the following metals reacts vigorously with cold water?
A. Aluminium
B. Iron
C. Sodium
D. Copper
✔️ Answer: C. Sodium - Which method is used for the extraction of metals of high reactivity?
A. Electrolysis
B. Roasting
C. Reduction by carbon
D. Magnetic separation
✔️ Answer: A. Electrolysis - Which of the following metals is the least reactive?
A. Iron
B. Gold
C. Zinc
D. Aluminium
✔️ Answer: B. Gold - The property of metals to be drawn into wires is called:
A. Malleability
B. Ductility
C. Conductivity
D. Reactivity
✔️ Answer: B. Ductility
