What are haloalkanes and haloarenes? Structure, types, and examples
This page provides NEET-focused Organic Compounds Containing Halogens MCQ practice with detailed answer keys and explanations. Covering essential concepts like haloalkanes, haloarenes, and halogen derivatives, it strengthens your Chemistry preparation using the latest NEET patterns. Regularly practicing these MCQs builds accuracy, clarifies concepts, and helps boost your NEET score in the organic section.
What are MCQs for Organic Compounds Containing Halogens?
MCQs based on organic compounds containing halogens test your knowledge of reactions, mechanisms, nomenclature, and properties of haloalkanes, haloarenes, and related halogen derivatives as per NEET syllabus. These questions help students revise essential topics and apply logic to typical exam scenarios, improving retention and concept clarity for NEET Chemistry.
Why Practice NEET MCQs on Organic Compounds Containing Halogens?
Practicing chapterwise NEET MCQs on halogen-containing organic compounds is vital for understanding exam-relevant mechanisms, scoring pattern-based marks, and managing time. It trains you to recognize tricky options and develop exam strategy. Attempting these MCQs regularly, as found on Vedantu’s Haloalkanes and Haloarenes practice page, aligns your preparation with real NEET expectations.
Organic Compounds Containing Halogens MCQ Practice (NEET Pattern)
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Which of the following is a primary alkyl halide?
A. 2-Bromopropane
B. 1-Bromopropane
C. 2-Chlorobutane
D. 2-Iodobutane
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Which reaction converts an aryl diazonium salt to a haloarene?
A. Wurtz reaction
B. Finkelstein reaction
C. Sandmeyer reaction
D. Cannizzaro reaction
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The major product when chlorobenzene reacts with NaOH at high temperature and pressure is:
A. Benzyl alcohol
B. Phenol
C. Aniline
D. Benzene
-
Which reagent is best for converting R-Br to R-I?
A. NaI in acetone
B. KOH(aq)
C. Br2/Fe
D. KI in ethanol
-
Chlorination of methane in sunlight produces mainly:
A. CH3Cl
B. CH2Cl2
C. CCl4
D. CH3OH
-
The number of possible stereoisomers of 2-chlorobutane is:
A. 1
B. 2
C. 3
D. 4
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Which is a secondary alkyl halide?
A. 1-Chloropropane
B. 2-Chloropropane
C. 1-Chlorobutane
D. 1-Bromobutane
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What is the IUPAC name of DDT?
A. 2,2-Bis(4-chlorophenyl)-1,1,1-trichloroethane
B. Benzene hexachloride
C. 1,2-Dichloroethane
D. 1,4-Dichlorobenzene
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Which of the following is chiral?
A. 2-Bromobutane
B. 1-Bromopropane
C. 1,2-Dibromoethane
D. Bromobenzene
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Wurtz reaction is best suited for preparation of:
A. Alkanes
B. Alkenes
C. Alkynes
D. Alcohols
-
On reaction with AgNO2, ethyl bromide mainly forms:
A. Nitroethane
B. Ethyl nitrite
C. Ethanol
D. Ethyl nitrate
-
Chlorobenzene reacts with methyl chloride and AlCl3 to give:
A. o- & p-Chlorotoluene
B. Benzaldehyde
C. Aniline
D. Nitrobenzene
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Which of the following is aromatic halogen compound?
A. Chloroform
B. Ethyl chloride
C. Chlorobenzene
D. Vinyl chloride
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Which set of reactants gives toluene on reduction?
A. Chlorobenzene + H2/Pd
B. Benzyl chloride + Zn/HCl
C. Benzene + Cl2/UV
D. Bromobenzene + KNO2
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Homolytic cleavage of C–Cl bond in chloromethane gives:
A. CH3– and Cl+
B. CH3 and Cl radicals
C. CH3+ and Cl–
D. CH2=CH2 and HCl
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Which best expresses the order of reactivity of alkyl halides towards SN1?
A. 1° < 2° < 3°
B. 3° < 2° < 1°
C. 2° < 3° < 1°
D. 3° < 1° < 2°
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The major product when toluene is treated with excess chlorine in sunlight is:
A. Benzyl chloride
B. Benzaldehyde
C. Benzotrichloride
D. Chlorobenzene
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Which of the following statements about C–Cl bond in chlorobenzene is correct?
A. Undergoes nucleophilic substitution easily
B. Is stronger than C–Cl in alkyl chloride
C. Is weaker than in alkyl chloride
D. Is nonpolar
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For the preparation of aryl fluorides from diazonium salts, which reaction is used?
A. Sandmeyer
B. Balz-Schiemann
C. Fittig
D. Gattermann
-
Identify the electrophile in the chlorination of benzene with Cl2/FeCl3:
A. Cl–
B. Cl+
C. FeCl4–
D. [Cl2Fe]+
MCQ Answer Key
| Q.No. | Answer | Explanation |
|---|---|---|
| 1 | B | 1-Bromopropane is primary as Br is on terminal carbon. |
| 2 | C | Sandmeyer reaction replaces diazonium group by halogen on aromatic ring. |
| 3 | B | Phenol forms when chlorobenzene reacts with NaOH at high temp and pressure. |
| 4 | A | Finkelstein reaction uses NaI in acetone to form alkyl iodides. |
| 5 | A | CH3Cl is the primary product in the chlorination of methane. |
| 6 | B | 2-Chlorobutane has one chiral carbon and so 2 stereoisomers. |
| 7 | B | 2-Chloropropane is a secondary alkyl halide. |
| 8 | A | DDT is 2,2-Bis(4-chlorophenyl)-1,1,1-trichloroethane. |
| 9 | A | 2-Bromobutane is chiral as it has four different groups on C-2. |
| 10 | A | Wurtz reaction is used for coupling alkyl halides to get alkanes. |
| 11 | A | AgNO2 with ethyl bromide gives nitroethane mainly. |
| 12 | A | Friedel-Crafts with chlorobenzene gives ortho and para chlorotoluene. |
| 13 | C | Chlorobenzene is an aromatic halogen compound (aryl halide). |
| 14 | B | Benzyl chloride on reduction gives toluene (methylbenzene). |
| 15 | B | Homolysis forms methyl and chlorine radicals. |
| 16 | A | SN1 rate: tertiary > secondary > primary alkyl halide. |
| 17 | C | Benzotrichloride is formed as the major product with excess Cl2. |
| 18 | B | C–Cl in chlorobenzene is stronger due to resonance & partial double bond character. |
| 19 | B | Balz-Schiemann reaction is for preparation of aryl fluorides from diazonium salts. |
| 20 | B | Cl+ (chloronium ion) is the electrophile in chlorination of benzene. |
Explanations clarify reasoning behind each answer and help students understand important NEET concepts.
How These MCQs Help in NEET
Practicing organic compounds containing halogens MCQ sharpens your ability to handle NEET Chemistry’s tricky single-choice questions. These questions reinforce important concepts, develop time management, and reflect real exam trends. For comprehensive practice, visit Vedantu’s NEET Chemistry Chapterwise Practice and organic MCQ practice pages.
Tips and Next Steps for NEET Organic MCQ Mastery
- Revise mechanisms: Sandmeyer, Finkelstein, Wurtz, and electrophilic aromatic substitution.
- Practice from Vedantu’s important notes and halogen derivatives structure resources.
- Review regular NEET MCQs for spotting recurring concepts and increasing speed.
- Use analytics on test series to identify weak areas for targeted revision.
Consistent MCQ practice on organic compounds containing halogens strengthens concept clarity, NEET exam strategy, and problem-solving skills. Answer keys and explanations guide self-correction. Make such NEET MCQ sessions a regular part of your revision for maximum improvement and exam confidence.
FAQs on Organic compounds containing halogens MCQ – solved practice for students
1. What are organic compounds containing halogens?
Organic compounds containing halogens are chemical compounds in which one or more hydrogen atoms in a hydrocarbon are replaced by halogen atoms (F, Cl, Br, I).
- Examples include haloalkanes and haloarenes.
- Common types: alkyl halides, aryl halides, and polyhalogen derivatives.
- These compounds show unique nucleophilic substitution and elimination reactions important for NEET syllabus MCQs.
- Topics include reactions, naming, and mechanisms as outlined in the NEET Chemistry curriculum.
2. Which NEET topics include haloalkanes and haloarenes?
Haloalkanes and haloarenes are covered under the NEET Chemistry section on organic compounds containing halogens.
- This includes chapters like haloalkanes (alkyl halides), haloarenes (aryl halides), and polyhalogen compounds.
- Key topics are naming, properties, reaction mechanisms (SN1, SN2), and conversions.
- MCQs are framed on concepts like Sandmeyer reaction, Wurtz reaction, and Finkelstein reaction.
3. How to score high in NEET Chemistry organic MCQs on halogen derivatives?
To score high in NEET Chemistry MCQs on halogen derivatives, follow these strategies:
- Thoroughly learn reaction mechanisms (e.g., SN1, SN2, elimination).
- Practice previous year NEET MCQs and chapterwise tests.
- Revise key IUPAC rules and common conversions.
- Review explanations for each mistake using instant answer key analytics.
- Focus on high-yield reactions (Sandmeyer, Wurtz) and avoid guesswork to minimize negative marking.
4. Where can I find MCQs on organic compounds containing halogens for NEET?
You can find organic compounds containing halogens MCQs for NEET on educational platforms like Vedantu and in NEET-specific Chemistry MCQ books.
- Websites host chapterwise MCQ tests and online mock tests focusing on haloalkanes, haloarenes and related derivatives.
- Check for resources that offer instant marking, answer keys, and detailed solutions as per the latest NEET pattern.
- Review NEET previous year papers for authentic question patterns.
5. Are answer keys available for haloalkanes and haloarenes mock tests?
Answer keys are provided for most haloalkanes and haloarenes mock tests online.
- Instant answer keys appear after submission of the test.
- Each answer is accompanied by a detailed explanation with references to NCERT or NEET guides.
- This helps students quickly learn from mistakes and solidify core concepts required for NEET.
6. What is the importance of practicing halogen derivatives MCQs for NEET?
Practicing halogen derivatives MCQs is crucial for NEET Chemistry success.
- These topics are frequently tested in NEET exams and contribute to a significant portion of organic chemistry questions.
- Regular practice improves accuracy, speed, and conceptual understanding.
- Identifies commonly confused reactions and helps with retention of mechanisms and exceptions.
- Boosts confidence during actual NEET exams.
7. How can I analyze my NEET mock test performance for organic halogen compounds?
Analyzing your NEET Chemistry mock test performance helps focus your revision.
- Review your total score, accuracy percentage, and time spent per question.
- Identify strong and weak topics using analytic reports.
- Pinpoint recurring mistakes or patterns in incorrect answers.
- Use this data to tailor revision and practice high-yield or problematic concepts.
8. How can I prepare organic halogen compounds effectively for NEET?
Effective NEET preparation for organic halogen compounds includes:
- Memorize key reaction mechanisms (SN1, SN2, electrophilic substitution).
- Practice MCQs regularly to improve accuracy and time management.
- Revise IUPAC nomenclature and structural conversions.
- Study previous year NEET questions and analyze solutions.
- Focus on high-weightage reactions like Sandmeyer, Wurtz, Finkelstein, and Reimer-Tiemann.
9. Can I download organic halogen compounds MCQ PDFs with solutions?
Yes, you can download organic halogen compounds MCQ PDFs with solutions from NEET study platforms and educational websites.
- Look for PDFs that include NEET-aligned questions, answer keys, and explanations.
- These resources are useful for offline practice and last-minute revision.
- Check for regularly updated content that follows the latest NEET exam pattern.
10. How often should I retake NEET Chemistry topic-wise mocks for best results?
For best performance, attempt NEET Chemistry topic-wise mocks on organic halogens:
- Every 1-2 weeks, or more frequently if possible.
- After learning each chapter or completing a revision cycle.
- Before full-length mock tests, to diagnose persistent weak areas.
- Analyze analytics after each attempt to focus future practice.
