Tetraethyl lead is a gasoline additive that was used to improve octane rating and reduce engine knocking. It is a toxic substance that is no longer used in gasoline in most countries due to its environmental and health impacts.
A. Pain Killer: Tetraethyl lead is not a pain killer. Pain killers are medications that are used to relieve pain. Some common pain killers include acetaminophen, ibuprofen, and naproxen.
B. Fire Extinguisher: Tetraethyl lead is not a fire extinguisher. Fire extinguishers are devices that are used to extinguish fires. There are many different types of fire extinguishers, each designed to extinguish a specific type of fire.
C. Mosquito Repellent: Tetraethyl lead is not a mosquito repellent. Mosquito repellents are substances that are applied to the skin or clothing to prevent mosquitoes from biting. Some common mosquito repellents include DEET, picaridin, and IR3535.
D. Petrol Additive: Tetraethyl lead was used as a petrol additive to improve octane rating and reduce engine knocking. Octane rating is a measure of a fuel’s ability to resist knocking in an engine. Knocking is a type of uncontrolled combustion that can damage an engine. Tetraethyl lead was effective in reducing knocking, but it is a toxic substance that is no longer used in gasoline in most countries due to its environmental and health impacts.