HomeSSCWhich of the following is an anti-knocking compound that has been phased out in many countries so far? Which of the following is an anti-knocking compound that has been phased out in many countries so far?By Admin / October 4, 2025 A. Lead tetrachloride B. Tetra Ethyl Lead C. Ethyl acetate D. None of the above ✅ The correct answer is option B.