Octane number of petrol can be improved by admixing it with which of the following chemicals?
Et4Pb
CH3OC(CH3)3
Both (a) and (b)
Pyrene
C.
Both (a) and (b)
Octane rating of petrol can be imported by adding small amounts of certain compounds known as anti-knock compounds, eg, tetraethyl lead (TEL). Such petrol is known as leaded petrol. Now a days methyl tert-butylether (MTBE) is also used to increase octane rating because its oxygen helps gasoline to burn more completely and optimises the oxidation during combustion.
An alkyl bromide is formed as the major product on reaction of 3-methyl-2-butene with hydrobromic acid under thermodynamic conditions. Which of the following is the correct IUPAC name of this product?
2-bromo-3-methylbutane
1-bromo-3-methylbutane
2-bromo-2-methylbutane
1-bromo-3-methyl-2-butene
The IUPAC name of
4-bromo-2-chloro-5-iodo-1-fluorobenzene
2-carbamoylhex-3-enal
1-bromo-2-chloro-3-fluoro-6-iodobenzene
2-bromo-1-chloro-5-fluoro-3-iodobenzene
Which one of the following represents the major product of the reaction of benzene with 2, 2-dimethylpropyl chloride in presence of anhydrous aluminium chloride?
2, 2-dimethylpropylbenzene
1, 1-dimethylpropylbenzene
1, 2-dimethylpropylbenzene
1, 2-dimethyl-1-propenylbenzene