71st BPSC Prelims (2025), question 137

🔬 Science & Technology

  1. Which compound is used to increase octane rating?

    1. Trimethyl hexane
    2. Tetramethyl Oxide
    3. Tetraethyllead
    4. Triethyl toluene
    Show answer

    Answer: C — Tetraethyllead

    Tetraethyllead was historically added to petrol to boost octane rating.

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