71st BPSC Prelims (2025), question 132

🔬 Science & Technology

132. Which compound is known as a night-glowing pigment?

     1. Europium doped strontium aluminate
     2. Copper Sulphide doped zinc oxide
     3. Barium sulphate doped copper carbonate
     4. Boron oxide doped copper sulphate
     Show answer

     Answer: A — Europium doped strontium aluminate

     Europium-doped strontium aluminate is the modern glow-in-the-dark phosphor pigment.

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