The correct answer is: C. 1 and 2
Benzene is a chemical compound with the molecular formula C6H6. It is a colorless, highly flammable, and highly toxic liquid. Benzene is a simple aromatic hydrocarbon, meaning that it contains a six-membered ring of carbon atoms with alternating single and double bonds. Benzene is a common industrial solvent and is also used to make other chemicals, such as plastics and rubber.
TEL, or tetraethyllead, is a chemical compound with the formula Pb(C2H5)4. It is a colorless, flammable liquid that is used as an antiknocking agent in gasoline. TEL works by preventing the formation of pre-ignition, which is a type of engine knock that can damage the engine. TEL is a toxic substance and is no longer used in gasoline in most countries.
Statement 1 is correct because benzene is the simplest aromatic hydrocarbon. Statement 2 is also correct because TEL is used as an antiknocking agent. Therefore, both statements are correct.