Question map
Not attempted Correct Incorrect ★ Bookmarked
Loading…
Q116 (CDS-I/2009) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Applied everyday chemistry Answer Verified

Which one of the following petroleum refinary products has the lowest boiling point ?

Result
Your answer: —  Â·  Correct: C
Explanation

In a petroleum refinery, crude oil is separated into various fractions based on their boiling points through fractional distillation. The boiling point of a hydrocarbon fraction is directly related to the length of its carbon chain; shorter chains have lower boiling points. Gasoline (petrol) typically consists of hydrocarbons with 4 to 12 carbon atoms, resulting in a boiling range of approximately 30°C to 200°C. In contrast, kerosene (C12-C15) boils between 200°C and 250°C, while diesel (C15-C18) and gas oils boil between 200°C and 350°C. Lubricating oils consist of even heavier molecules (C16-C20+) with boiling points exceeding 350°C. Therefore, among the given options, gasoline is the most volatile product with the lowest boiling point, allowing it to evaporate quickly at normal temperatures.

Sources

  1. [1] Certificate Physical and Human Geography , GC Leong (Oxford University press 3rd ed.) > Chapter 27: Fuel and Power > Oil Refining > p. 269
How others answered
Each bar shows the % of students who chose that option. Green bar = correct answer, blue outline = your choice.
Community Performance
Out of everyone who attempted this question.
50%
got it right
✓ Thank you! We'll review this.

SIMILAR QUESTIONS

NDA-I · 2018 · Q56 Relevance score: 1.59

Which one of the following alkali metals has lowest melting point ?

NDA-I · 2023 · Q74 Relevance score: -1.56

Which of the hydrocarbons are arranged as per the increasing order of their boiling points ?

NDA-II · 2010 · Q81 Relevance score: -2.15

As compared to covalent compounds, electrovalent compounds, generally have

IAS · 1997 · Q115 Relevance score: -2.48

Which one of the following has the highest fuel value ?