The quality of diesel is expressed by
octane number
cetane number
antiknock compound
presence of additives
An alkene having molecular formula, C6H10 gives OHC(CH2)4CHO, on ozonolysis. The alkene is
hexene-1
hexene-2
cyclohexene
1-methylcyclohexene-1
When petroleum is heated gradually, the first batch of vapours evolved will be rich in
kerosene oil
diesel oil
lubricating oil
petroleum ether
The correct name for the following hydrocarbon is
tricycle [4.1.0] heptane
bicyclo [5.2.1] heptane
bicyclo [4.1.0] heptane
bicyclo [4.1.0] hexane
The number of isomeric alkanes having the molecular formula C5H12 is
Three
Five
nine
Thirty two
Which organic compound is an electrolyte ?
CH3Cl
HCOOH
CH3OH
C6H12O6
B.
HCOOH
Electrolytes ionise in aqueous solution.
Since, HCOOH on ionisation gives formate ion and H+ ion,it is an electrolyte. Formate ion is stabilised by resonance.
The petrol, octane number of which is 80, has
20% n-heptane + 80% iso-octane
20% n-heptane + 80% n-octane
80% n-heptane + 20% iso-octane
80% n-heptane+ 20% n-octane
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
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
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