Q: In an incandescent electric bulb, the filament of the bulb is made up of which metal?
(a)Aluminium
(b)Copper
(c)Tungsten
(d)Silver
Correct Answer: (a)
The correct answer is (b): Copper. Subject: Geography | Sub-topic: Economic & Mineral Geography Note: This answer was determined through AI-based research. Verify against the official answer key when available.