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Alkyl Halides 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.
An Alkyl Halide is an Alkane in which a hydrogen atom has been replaced by a halogen atom.
Alkyl Halides topic is considered to be of moderate difficulty level with major focus on SN1 & SN2 Mechanisms
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Download JEE Main 2025 Shift 1 Question Paper with Detailed Solutions
The Alkyl Halides questions with detailed solutions asked in JEE Main are listed below:
Question 1
- 1>3>2>4
- 4>1>2>3
- 3>2>1>4
- 4>3>1>2
Question 2
- N and S only
- N, P and S only
- P and halogens only
- N, P, S and halogens
Question 3
- Acetic acid solvent can take in the above reaction.
- NaI is soluble in acetone but NaBr is precipitate in acetone
- NaI is precipitated in acetone but NaBr is soluble in acetone
- When acetone is taken in solvent transition state is highly polar
Question 4
- C2Cl2F2
- C2HF3
- C2F4
- C2H2F2
Question 5
Question 6
Question 7
- CH3NH2.HCl
- NH2OH .HCl
- NH4Cl
- N2H4 . HCl
Question 8
Question 9
Question 10
- All radicals are known as freons.
- Freons cause skin cancer.
- Freons are chlorofluorocarbon.
- Freons are used in sunscreen lotion.
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 are 3 Alkyl Halides?
Tertiary Alkyl Halide (30 alkyl halide, tertiary haloalkane, 30 haloalkane). An alkyl halide (haloalkene) in which the halogen atom (F,Cl, Br or I) is bonded to a tertiary carbon. Tert-butyl chloride (2 - chloro - 2 - methylpropane) is a tertiary alkyl halide.
What is the formula for Alkyl Halides?
Monohalogen derivatives of alkanes are called alkyl halides. These are represented by the formula: CnH2n+1X or R-X. In this formula R = alkyl group, X = halogen atom.
What are the rules for naming Alkyl Halides?
The common names of alkyl halides comprises of two parts: the name of the alkyl group plus the stem of the name of the halogen with the ending -ide. The IUPAC system uses the name of the parent alkane with a prefix indicating the halogen substituents preceded by number indicating the location.
What is the correct order of Alkyl Halide?
The order of reactivity of various alkyl halides to the nucleophilic substitution is in this order: RF>RCl>RBr>RI, RCl>RBr>RI>RF.
What is the most common reaction of Alkyl Halides?
Alkyl Halides can undergo two major types of reaction: Substitution and Elimination.
The Substitution Reaction is called a Nucleophilic Substitution Reaction because the electrophilic alkyl halide forma a new bond with the nucleophile which replaces the halogen at the alpha carbon.
The Elimination Reactions form Alkenes which when treated with strong bases a process known as dehydrohalogenation happens, where a hydrogen and halogen are removed from adjacent carbons.
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