How is the diesel index calculated?

Petroleum Refinery Engineering MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

PPSCFPSCNTSPakistan govt jobs
Subject
Petroleum Refinery Engineeringchemical-engineering › petroleum-refinery-engineering
Published
1 Mar 2019
Last updated
28 May 2026

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Explanation

The diesel index is determined by multiplying the API gravity (in degrees API) by the Aniline Point measured in degrees Fahrenheit, and then dividing the product by 100.

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