Consider the following statements in the light of octane number and cetane number of fuels : 1. Cetane number is used for gasoline and octane number is used for diesel. 2. Octane number of n-hexadecane is 100 and cetane number of isooctane is 100. Which of the statements given above is/are correct?
Neither 1 nor 2
Statement 1 is incorrect: it is the reverse of the actual usage. The octane number rates the anti-knocking quality of petrol/gasoline used in spark-ignition engines, while the cetane number rates the ignition quality of diesel used in compression-ignition engines.
Statement 2 is incorrect: it also swaps the reference values. On the octane scale, iso-octane (2,2,4-trimethylpentane) is assigned an octane number of 100 as the excellent anti-knock reference, while on the cetane scale, n-hexadecane (cetane) is assigned a cetane number of 100 as the reference fuel with excellent ignition quality.
Since both statements interchange the correct pairing of fuel scale, reference compound and fuel type, neither statement is correct.
Similar Questions
Which of the following pairs of products obtained from petroleum distillation and their uses are correctly matched?
1. Petroleum ether : Used as solvent
2. Petroleum jelly : Used to make coating of metals
3. Petroleum wax : Used as rubber solvent
4. White spirit : Used for making candles
Select the answer using the code given below.
Important Questions from Hydrocarbons
The number of structural isomers of pentane is
C 4H 8belongs to the homologous series of
- Refining of petroleum is carried out using which one of the following techniques?
What is the number of mole(s) of H 2(g) required to saturate one mole benzene?
Which one of the following carbon compounds will not give a sooty flame?
