Chemical Engineering - Petroleum Refinery Engineering
Exercise :: Petroleum Refinery Engineering - Section 4
21.
H/C ratio (by weight) for the same number of carbon atoms is the highest in case of
A. aromatics B. paraffins C. olefins D. naphthenes
Answer: Option D
Explanation:
22.
Which of the following theories of origin of petroleum does not explain the presence of nitrogen & sulphur compounds in crude oil?
A. Modern theory B. Carbide theory C. Engler theory D. all (a), (b) and (c)
Answer: Option B
Explanation:
23.
Higher vapour pressure of gasoline indicates
A. low flash point B. high breathing loss C. both (a) and (b) D. neither (a) nor (b)
Answer: Option D
Explanation:
24.
Iso-octane is used as a reference substance in the definition of octane number and it is assigned an octane number value of 100. Iso-octance is chemically known as
A. α-methyl naphthalene. B. 2-2-4 tri methyl pentane. C. 1, 3 butadiene. D. tetra methyl ethylene.
Answer: Option B
Explanation:
25.
Pour point of a petrofuel is
A. multiple of 3°F. B. multiple of 5°F. C. 5°C below the temperature at which oil ceases to flow. D. none of these.
Answer: Option C
Explanation:
