A sample of diesel has the same knocking characteristics as a 60 mL mixture of cetane and a-methyl naphthalene mixed in 2 :1 ratio. The cetane number of the diesel sample is

Question

A sample of diesel has the same knocking characteristics as a 60 mL mixture of cetane and a-methyl naphthalene mixed in 2 :1 ratio. The cetane number of the diesel sample is (A) 60 (B) 40 (C) 66.6 (D) 33.3

Tardigrade Admin · Accepted Answer

Volume of cetane = 60 x (2/3) = 40 mL Volume of α text- methylnaphthalene =60× (1/2)=20 text mL ∴ cetane number of diesel sample =(40/60)× 100=66.6

Q. A sample of diesel has the same knocking characteristics as a 60 mL mixture of cetane and a-methyl naphthalene mixed in 2 :1 ratio. The cetane number of the diesel sample is

60

40

66.6

33.3

Volume of cetane = 60 x (2/3) = 40 mL Volume of $α -$ methylnaphthalene $= 60 \times \frac{1}{2} = 20 m L$ $∴$ cetane number of diesel sample $= \frac{40}{60} \times 100 = 66.6$

Q. A sample of diesel has the same knocking characteristics as a 60 mL mixture of cetane and a-methyl naphthalene mixed in 2 :1 ratio. The cetane number of the diesel sample is

60

40

66.6

33.3

Volume of cetane = 60 x (2/3) = 40 mL Volume of α- methylnaphthalene =60×21​=20mL ∴ cetane number of diesel sample =6040​×100=66.6

Volume of cetane = 60 x (2/3) = 40 mL Volume of $α -$ methylnaphthalene $= 60 \times \frac{1}{2} = 20 m L$ $∴$ cetane number of diesel sample $= \frac{40}{60} \times 100 = 66.6$