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Hydrocarbons is a part of Organic Chemistry section and carries 3.3% weightage in the JEE Main Chemistry Question Paper, generally 1-2 questions are asked from this topic. Hydrocarbons are organic compounds consisting of hydrogen and carbon found in crude oil, natural gas and coal.
Hydrocarbons topic is considered to be of moderate difficulty level with major focus on Alkanes, Alkenes, Alkynes Reactions.
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Download JEE Main 2025 Shift 1 Question Paper with Detailed Solutions
The Hydrocarbons questions with detailed solutions asked in JEE Main are listed below:
Question 1
- 2,2,4,4-Tetramethylhexane
- 2,2,3-Tetramethylpentane
- 4-Ethyl-3,4-dimethyloctane
- 2,2,4,5-Tetramethylheptane
Question 2
Question 3
Question 4
- cis-2-butene and trans-2-butene are not interconvertible at room temperature.
- cis-2-butene has less dipole moment than trans-2-butene.
- trans-2-butene is more stable than cis-2-butene.
- cis-2-butene and trans-2-butene are stereoisomers.
Question 5
Question 6
- Propan-1-ol
- Propene
- Propyne
- Propan-2-ol
Question 7
Question 8
Question 9
Question 10
- Square planar
- Tetrahedral
- Octahedral
- Trigonal bipyramidal
JEE Main 2025 Chemistry Question Paper Pattern
The JEE Main 2025 Chemistry question paper consists of 25 mandatory questions worth a total of 100 marks. Each correct answer will be awarded +4 marks and 1 mark will be deducted for every incorrect answer.
JEE Main 2025 Chemistry Chapter Wise Weightage
JEE Main 2025 Chemistry syllabus is divided into three sections:
Physical Chemistry: Physical Chemistry consists of conceptual and numerical based topics. The important topics include Thermodynamics, Equilibrium and Chemical Kinetics.
Inorganic Chemistry: This comprises theory and concept based questions. Important topics include Chemical Bonding, p - block elements and Coordination Compounds.
Organic Chemistry: It includes reaction mechanism based questions. Important topics are General Organic Chemistry, Hydrocarbons and Aldehydes, Ketones and Carboxylic Acids.
| Class | Chapter | Approx. Weightage |
|---|---|---|
| Class 11 | Some Basic Concepts of Chemistry | 3.3% |
| Structure of Atom | 6.6% | |
| Chemical Bonding & Molecular Structure | 6.6% | |
| Thermodynamics | 6.6% | |
| Equilibrium | 6.6% | |
| Redox Reactions | 3.3% | |
| Hydrocarbons | 3.3% | |
| Class 12 | Solid State | 3.3% |
| Solutions | 3.3% | |
| Electrochemistry | 3.3% | |
| Chemical Kinetics | 3.3% | |
| Surface Chemistry | 3.3% | |
| p-Block Elements | 9.9% | |
| d- and f-Block Elements | 9.9% | |
| Coordination Compounds | 9.9% | |
| Aldehydes, Ketones & Carboxylic Acids | 3.3% |
JEE Main Chemistry Previous Year Question Papers
The JEE Main Chemistry question paper PDFs along with the detailed solution PDF for the last 5 years is tabulated below:
| Year | Question Paper PDF | Solution PDF |
| 2024 | Download | Download |
| 2023 | Download | Download |
| 2022 | Download | Download |
| 2021 | Download | Download |
| 2020 | Download | Download |
Also Check:
Important Books of Class 11th and 12th Chemistry
Frequently Asked Questions
What is called Hydrocarbon?
In organic chemistry, hydrocarbon is an organic compound consisting entirely of Hydrogen and Carbon. Hydrocarbons are group 14 hydrides, which are colourless and hydrophobic. Their odor is faint, similar to gasoline or lighter fluid.
What are the 4 types of hydrocarbons?
Hydrocarbons are organic compounds that contain only carbon and hydrogen. The four classes of hydrocarbons are Alkanes, Alkenes, Alkynes and Arenes.
What is Hydrocarbon Formula?
The general formula for a saturated hydrocarbon containing one ring is CnH2n. The ratio of C and H in a chemical formula provides insights into the chemical structure.
What is the symbol for Hydrocarbon?
There are thousands of possible hydrocarbon molecules, the simplest types are called Alkanes. Alkanes have the formula CnH2n + 2, where n is 1,2,3, example, n=1 gives CH4.
What is the scientific name for Hydrocarbon?
Alkanes is the scientific name for Hydrocarbons. The simplest hydrocarbon is methane (CH4). It is the easiest series of hydrocarbons as each successive member of the series ahs one more carbon atom than the previous member. This series of compounds is called Alkanes.
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