What Are the Main Types and Uses of Hydrocarbons in Daily Life?
Hydrocarbons MCQ practice is essential for NEET Chemistry prep, targeting alkanes, alkenes, alkynes, and aromatic hydrocarbons. This page offers 20 Class 11-level MCQs aligned to NEET, with answer key and explanations. Use these questions to reinforce concept clarity, boost speed, and master Organic Chemistry, improving your NEET accuracy and score.
What are MCQs for Hydrocarbons?
Hydrocarbons MCQs are multiple-choice questions covering compounds made of hydrogen and carbon. These test your understanding of nomenclature, structure, reactions, isomerism, and properties in alkanes, alkenes, alkynes, and arenes. Practicing such NEET-focused MCQs builds conceptual depth, ensures application skills, and prepares you for all exam patterns.
Why Practice NEET MCQs?
Solving NEET MCQs helps identify your strong and weak areas, exposes you to real exam styles, and solidifies important Chemistry concepts. Practicing Hydrocarbons MCQs repeatedly also improves speed, accuracy, and confidence. Top scorers consistently practice with instant feedback and track progress using structured MCQ sets like these.
Hydrocarbons MCQ Practice (NEET-Level)
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Which of the following is the general formula for alkanes?
A. CnH2n-2
B. CnH2n-4
C. CnH2n+2
D. CnH2n
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Which hydrocarbon is the major component of natural gas?
A. Ethane
B. Propane
C. Methane
D. Butane
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Which term describes compounds with the same molecular formula but different structures?
A. Isomers
B. Isotopes
C. Homologues
D. Polymers
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The IUPAC name of CH2=CH–CH3 is:
A. Propyne
B. Propene
C. Propane
D. Cyclopropane
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Which of the following is an aromatic hydrocarbon?
A. Cyclohexane
B. Benzene
C. Hexene
D. Propane
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Which of these is the correct order of increasing boiling points?
A. Butane < Pentane < Hexane
B. Hexane < Pentane < Butane
C. Pentane < Butane < Hexane
D. Butane < Hexane < Pentane
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Which statement about alkenes is correct?
A. All are saturated
B. All are cyclic
C. Contain a double bond
D. Contain a triple bond
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What is the product of complete combustion of any hydrocarbon?
A. CO and H2O
B. CO2 and H2O
C. CO2 and CH4
D. C and H2O
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The number of isomers possible for C4H10 is:
A. 1
B. 2
C. 3
D. 4
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Which compound is used for artificial ripening of fruits?
A. Ethylene
B. Propane
C. Acetylene
D. Methane
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The main component of LPG is:
A. Methane
B. Propane
C. Ethene
D. Ethyne
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Which hydrocarbon gives a yellow sooty flame during combustion?
A. Ethane
B. Benzene
C. Propane
D. Methane
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The reaction of ethene with HBr in presence of peroxide is called:
A. Markovnikov addition
B. Wurtz reaction
C. Anti-Markovnikov addition
D. Substitution
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What is the product formed when acetylene reacts with ammoniacal AgNO3?
A. Silver acetylide
B. Ethene
C. Silver nitrate
D. Acetone
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Which of the following is not a property of aromatic hydrocarbons?
A. Planar structure
B. High stability
C. Non-polar nature
D. Free rotation around bonds
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The molecular formula of hex-2-yne is:
A. C6H10
B. C6H12
C. C6H14
D. C6H8
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Which one is a saturated hydrocarbon?
A. Cyclohexene
B. Cyclohexane
C. Benzene
D. Ethyne
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Which of the following is the major product in the chlorination of methane?
A. Carbon dioxide
B. Ethane
C. Dichloromethane
D. Chloromethane
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On hydrogenation, benzene forms:
A. Cyclohexane
B. Cyclohexene
C. Hexane
D. 1,3-Hexadiene
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Which hydrocarbon does NOT show chain or positional isomerism?
A. Ethane
B. Butane
C. Pentene
D. Propane
MCQ Answer Key
| Q.No. | Answer | Explanation |
|---|---|---|
| 1 | C | Alkanes have general formula CnH2n+2. |
| 2 | C | Methane is the major component of natural gas. |
| 3 | A | Isomers have same formula, different structures. |
| 4 | B | CH2=CH–CH3 is Propene. |
| 5 | B | Benzene is a typical aromatic hydrocarbon. |
| 6 | A | Boiling point increases with increasing chain length. |
| 7 | C | Alkenes contain at least one double bond. |
| 8 | B | Complete combustion yields CO2 and H2O. |
| 9 | B | Butane (C4H10) has two isomers. |
| 10 | A | Ethylene (ethene) is used for fruit ripening. |
| 11 | B | Propane is a main component in LPG. |
| 12 | B | Benzene burns with a sooty flame. |
| 13 | C | Peroxide causes anti-Markovnikov addition in ethene + HBr. |
| 14 | A | Acetylene with AgNO3 forms silver acetylide. |
| 15 | D | Aromatic rings do not allow free bond rotation. |
| 16 | A | Hex-2-yne is C6H10. |
| 17 | B | Cyclohexane is a saturated hydrocarbon. |
| 18 | D | Chlorination of methane mainly yields chloromethane. |
| 19 | A | Hydrogenation of benzene produces cyclohexane. |
| 20 | A | Ethane cannot form chain/positional isomers. |
Explanations clarify reasoning behind each answer and help students understand important NEET concepts.
How Do These Hydrocarbons MCQs Help in NEET?
Solving a range of Hydrocarbons MCQs builds conceptual foundation and improves recall for NEET Chemistry. Answer keys with explanations develop problem-solving logic for alkanes, alkenes, alkynes, and aromatic compounds. Similar MCQs are frequently asked in NEET, making this practice essential for maximising exam scores.
Next Steps and More Practice
- Try NEET Chemistry MCQ Practice: Alkanes, Alkenes, Alkynes for sub-topic mastery.
- For overall revision, use NEET Chemistry Chapterwise Practice Test: Organic Chemistry.
- Download more MCQs from NEET Chemistry MCQs PDF Download for offline drill.
- Analyse past trends with NEET Chemistry Previous Year Questions: Hydrocarbons.
- For concise recap, refer to NEET Organic Chemistry Quick Revision Notes.
Consistent Hydrocarbons MCQ practice sharpens accuracy and boosts NEET performance. Using Vedantu’s detailed answer keys and explanations ensures deeper conceptual understanding and exam readiness. Practise repeatedly, analyse mistakes, and explore more NEET Chemistry MCQs for a higher score and stronger fundamentals.
FAQs on Practice Hydrocarbons MCQ with Answers
1. Where can I find NEET Hydrocarbons MCQ practice tests online?
You can access free online NEET Hydrocarbons MCQ practice tests on platforms like Vedantu, featuring Class 11-based multiple-choice questions for exam preparation.
- Practice covers Alkanes, Alkenes, Alkynes, and Aromatic Hydrocarbons
- Includes instant scoring, timer, and detailed answers
- Aligns with the latest NEET Chemistry syllabus and weightage
2. Are the Hydrocarbons MCQs suitable for Class 11 and NEET syllabus?
Yes, the Hydrocarbons MCQ practice tests are curated strictly as per Class 11 syllabus and NEET exam trends.
- Questions cover all core sub-topics: Alkanes, Alkenes, Alkynes, and Aromatic hydrocarbons
- Difficulty matches NEET standards
- Updated periodically for NEET 2025 preparation
3. Can I download Hydrocarbons MCQs with answers in PDF format?
Yes, most platforms offer downloadable Hydrocarbons MCQs PDFs with answers for offline practice.
- Includes multiple choice questions and detailed solution keys
- Covers Class 11 Chemistry and NEET-centric questions
- Helpful for revision without needing internet access
4. How many Hydrocarbons MCQs are asked in NEET each year?
Typically, 2–3 questions on Hydrocarbons appear annually in the NEET Chemistry section.
- Questions span subtopics such as Alkanes, Alkenes, Alkynes, and Aromatics
- Most are based on mechanisms, properties, and reactions
- The actual number may vary by year but maintains consistent weightage
5. Does this test provide instant scoring and analytics?
Yes, the online Hydrocarbons MCQ test gives instant scoring and detailed performance analytics upon submission.
- See total score, correct/wrong answers, and accuracy percentage
- Percentile comparison helps measure preparation level
- Topicwise analysis highlights strengths and areas to improve in Chemistry
6. What is the exam format for the NEET Hydrocarbons MCQ practice test?
The NEET Hydrocarbons MCQ practice test follows a NEET-like pattern to ensure realistic practice.
- 20 objective-type MCQs
- Each question carries 4 marks; 1 mark is deducted for incorrect answers
- Time limit is 20 minutes — auto-submit on timeout
- Sections divided by hydrocarbon types: Alkanes, Alkenes, Alkynes, and Aromatic Compounds
7. Are answer keys and explanations available for the Hydrocarbons MCQ test?
Yes, each Hydrocarbons MCQ test provides a detailed answer key and stepwise explanations after submission.
- Explanations clarify underlying concepts and mechanisms
- Key focus on organic chemistry logic and exam patterns
- Supports guided self-correction and concept reinforcement
8. What are the best tips to score well in NEET Hydrocarbons MCQs?
To maximize your score in NEET Hydrocarbons MCQs:
- Revise the unique properties and reactions for each hydrocarbon type
- Master key mechanisms (e.g., Markovnikov and Anti-Markovnikov rules)
- Solve previous year NEET MCQs for trends
- Practice under timed conditions to improve speed
- Carefully review mistakes and understand every solution explanation
9. How do I analyze my weak areas after taking a Hydrocarbons MCQ test?
After the test, use performance analytics to pinpoint weak Hydrocarbons topics and improve targeted study.
- Check section-wise scores and time spent per question
- Identify repeated mistakes (e.g., reaction type vs. mechanism-based questions)
- Use explanation feedback to close knowledge gaps
10. Is the Hydrocarbons MCQ test updated for the NEET 2025 exam pattern?
Yes, reputed Hydrocarbons MCQ practice tests are routinely updated to match NEET 2025 syllabus and pattern.
- Reflects latest exam trends and question types
- Covers new and recurring concepts expected in NEET
- Supports current CBSE Class 11 and NEET eligibility standards
