Which of the following is used to increase the anti-knocking property of petrol ?
A
Tetramethyl lead
B
Tetraethyl lead
C
Trimethyl lead
D
Triethyl lead
Correct Answer: Tetraethyl lead
An anti-knocking agent is the substance which is used to reduce the engine knocking. It increases the octane number of the fuel. It helps in auto-ignition by raising the temperature and pressure. TEL is tetraethyl Lead which is used as an anti-knocking compound.