Hydrocarbon NEET PYQ with Answers

Hydrocarbons is an important chapter in NEET Chemistry preparation because the NTA always asks questions from this chapter. The candidates are advised to prepare all the Hydrocarbon Previous Year Questions (PYQs) so that they can feel confident in solving these topic questions in the NEET 2026 exam. 

NEET Hydrocarbon PYQ with Solutions

Hydrocarbons PYQs for NEET 2026 Exam: Chemistry is one of the three subjects in the NEET exam and has an equal weigtage that of Physics. Hydrocarbons is an important chapter of organic chemistry because most of the concepts in organic chemistry emanate from this chapter. The candidates are advised to prepare the fundamental concepts of this chapter so that in case of any twisted question, they can answer.

The Hydrocarbons chapter has a good weightage in the NEET question paper. The NTA ask around 3 to 5 questions from this chapter. The candidates must prepare it fully because the NTA can ask any ask of this topic.

The National Testing Agency will conduct the NEET Re-Exam 2026 on June 21. Earlier, the NTA cancelled the NEET exam held on May 3 due to paper leak cases reported to the NTA. The NEET Re-Exam Admit cards are available for downloading purposes. The candidates can download them and check their exam centres.

The NEET Hydrocarbon chapter holds around 10 per cent weightage of the Chemistry section. To prepare for this section, NEET previous years' questions (PYQ) must be practised. Practising Hydrocarbon NEET PYQ helps students understand the high-value topics, difficulty level and overall weightage in the exam. We have shared below the NEET Hydrocarbon questions with answers based on the previous years’ NEET question papers. Go through the PYQs and the weightage of the chapter below.

Hydrocarbon NEET Syllabus 2026

To understand the Hydrocarbon chapter, candidates need to prepare through the NEET 2026 syllabus. This chapter makes students understand the basics of Organic Chemistry, learn the reactions and know the uses of compounds. The complete syllabus must be covered before taking the NEET PYQ of Hydrocarbon chapter. Check the Hydrocarbon NEET syllabus below-

• Classification, isomerism, IUPAC nomenclature, general methods of preparation, properties, and reactions.
• Alkanes - Conformations: Sawhorse and Newman projections (of ethane): Mechanism of halogenation of alkanes.
• Alkenes - Geometrical isomerism: Mechanism of electrophilic addition: addition of hydrogen, halogens, water, hydrogen halides (Markownikoffs and peroxide effect): Ozonolysis and polymerization.
• Alkynes - Acidic character: Addition of hydrogen, halogens, water, and hydrogen halides: Polymerization.
• Aromatic hydrocarbons - Nomenclature, benzene - structure and aromaticity: Mechanism of electrophilic substitution: halogenation, nitration.
• Friedel - Craft's alkylation and acylation, directive influence of the functional group in monosubstituted benzene.

Hydrocarbon NEET Weightage

Students should know the weightage of questions asked from NEET Hydrocarbon chapter. Though the NTA does not share the weightage of NEET syllabus, however, the same can be known after analysis of Last 5 years NEET question paper PDFs. Check the weightage of Hydrocarbon chapter of NEET Chemistry below:

Hydrocarbon NEET PYQ with Answers

NEET PYQ on Hydrocarbon must be solved to have a good hold on this chapter. After finishing the complete NEET Hydrocarbon syllabus, candidates should practice Hydrocarbon NEET PYQ to check their preparations. Have a look at some questions asked in exam from NEET Chemistry Hydrocarbon chapter below.

Which compound can exist as cis-trans isomers?

1. 1, 1-Dimethycyclopropane 
2. 1, 2-Dimethylcyclohexane
3. Pent-1-ene
4. 2-Methylhex-2-ene

Answer- B

Baeyer's reagent is:

1. Acidic potassium permanganate solution
2. Acidic potassium dichromate solution
3. Cold, dilute, aqueous solution of potassium permanganate
4. Hot, concentrated solution of potassium permanganate

Answer- C

Which compound will show geometrical isomerism?

1. Pent-1-ene
2. 2,3-Dimethylbut-2-ene
3. 2-Methylprop-1-ene
4. 3,4-Dimethylhex-3-ene

Answer- D

The decreasing order of boiling points of the following alkanes is-

1. Heptane
2. Butane
3. 2-methylbutane
4. Methylpropane
5. Hexane

Choose the correct answer from the options given below:

1. (a) > (e) > (c) > (b) > (d)
2. (a) > (c) > (e) > (d) > (b)
3. (c) > (d) > (a) > (e) > (b)
4. (a) > (e) > (b) > (c) > (d)

Answer- A

The incorrect method for the synthesis of alkenes is-

1. Treating vicinal dihalides with Zn metal
2. Treating of alkynes with Na in liquid NH3
3. Heating alkyl halides with alcoholic KOH
4. Treating alkyl halides in aqueous KOH solution

Answer- D

With respect to the conformers of ethane, which of the following statements is true?

1. Bond angle changes but bond length remains same.
2. Both bond angle and bond length change.
3. Both bond angle and bond length remain same.
4. Bond angle remains same but bond length changes.

Answer- C

Consider the nitration of benzene using mixed conc. H2SO4 and HNO3 . If a larger amount of KHSO4 is added to the mixture the rate of nitration will be-

1. Doubled
2. Faster
3. Slower
4. Unchanged

Answer- C

Which can be used as the halide component for Friedel-Crafts reaction?

1. Chlorobenzene
2. Bromobenzene
3. Chloroethene
4. Isopropyl chloride

Answer- D

The compound that will react most readily with gaseous bromine has the formula-

1. C3H6
2. C2H2
3. C4H10
4. C2H4

Answer- A

Which organic compound has same hybridization as its combustion product (CO2)?

1. Ethene
2. Ethanol
3. Ethane
4. Ethyne

Answer- D

Other NEET Chapter-Wise PYQ: