Antiknocking agent added to petrol is commonly

Antiknocking agent of unleaded petrol is

The antiknock agent added to unleaded petrol is

Antiknocking agent of unleaded petrol is (a) Dibromoethane (b) Methyl-ethyl ether (c) Propane (d) Methyl tertiary Butyl ether

The toxic metal that is used as an antiknocking agent in petrol engines of automobiles is ........... .

Iso-octane is added to petrol: