Difficulty distribution
How the classified questions are distributed by difficulty.
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Practice Petroleum Refining and Petrochemicals - Chemical Technology - Chemical Engineering previous year questions organised from real papers, with year-wise coverage and clear topic navigation.
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Year-wise coverage for Petroleum Refining and Petrochemicals. Each bar uses a separate theme-derived color.
How the classified questions are distributed by difficulty.
MCQ, numerical, multiple-select and other formats found in these papers.
Top subjects by unique question coverage.
Top topics across the included previous year papers.
Top subtopics inside this exact selection.
Question coverage for the most populated papers. Every active PYP paper remains listed below.
Newest papers appear first. Sort by year, question coverage or name.
| Paper | Year / session | Questions in this view | Open |
|---|---|---|---|
| Chemical Engineering (CH) 2026 | 2026 | 1 | View paper |
| Chemical Engineering (CH) 2024 | 2024 | 1 | View paper |
| Chemical Engineering (CH) 2023 | 2023 | 1 | View paper |
| Chemical Engineering (CH) 2022 | 2022 | 1 | View paper |
| Chemical Engineering (CH) 2021 | 2021 | 1 | View paper |
| Chemical Engineering (CH) 2020 | 2020 | 1 | View paper |
| Chemical Engineering (CH) 2019 | 2019 | 2 | View paper |
| Chemical Engineering (CH) 2018 | 2018 | 1 | View paper |
| Chemical Engineering (CH) 2014 | 2014 | 2 | View paper |
| Chemical Engineering (CH) 2013 | 2013 | 1 | View paper |
| Chemical Engineering (CH) 2012 | 2012 | 3 | View paper |
| Chemical Engineering (CH) 2011 | 2011 | 4 | View paper |
| Chemical Engineering (CH) 2009 | 2009 | 2 | View paper |
| Chemical Engineering (CH) 2008 | 2008 | 1 | View paper |
| Chemical Engineering (CH) 2007 | 2007 | 1 | View paper |
Practice every matching question in batches of 20, with every available option.
In petroleum refining operations, the process used for converting paraffins and naphthenes to aromatics is
Which ONE of the following sequences is arranged according to INCREASING calorific value?
The final boiling points of gasoline, diesel, atmospheric gas oil (AGO) and lubricating oils vary as
The main unit processes used for the production of hydrogen from natural gas are steam reforming (SR), pressure swing adsorption (PSA), low temperature water gas shift reaction (LT WGS) and high temperature water gas shift reaction (HT WGS). The correct sequence of these in the plant is
In connection with petroleum refining, identify the incorrect statement among the following options.
| Group – 1 | Group – 2 |
|---|---|
| P Hydrodesulfurization | I Zeolites |
| Q Fluid catalytic cracking (FCC) | II Pt/Al2O3 |
| R Naphtha reforming | III Co-Mo/Al2O3 |
| Group - 1 | Group - 2 |
|---|---|
| P Methylcyclohexane → Toluene + 3H2 | I Dehydrocyclization |
| Q Ethylcyclopentane → Methylcyclohexane | II Cracking |
| R n-Octane → Ethylbenzene + 4H2 | III Dehydrogenation |
| S n-Octane → n-Pentane + Propylene | IV Isomerization |
Catalytic reforming is commonly used in the petroleum industry to improve fuel quality. The undesirable reaction in the catalytic reforming of naphtha is
Showing 20 of 22 questions