General science UPPSC 2000 GS-I
Question

These days yellow lamps are frequently used as street light. Which one of the following is used in these lamps?

Answer & Solution

Answer: (Detailed Solution Below)

Option A: Sodium

Detailed Solution:

The correct answer is “Sodium”.

The answer is: (1) Sodium

Sodium is the element used in yellow street lamps. These lamps are called sodium-vapor lamps and they emit a bright yellow light due to the excitation of sodium atoms within the lamp.

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