Hydrocarbon Important Questions for NEET 2025 PDF Download

Hydrocarbon Important Questions for NEET: Hydrocarbons are one of the most important topics in organic chemistry. They form the basis of many concepts and reactions in chemistry. For NEET 2025, understanding hydrocarbons is very important because many questions are asked from this chapter. To help students practice, we have compiled a set of important questions with solutions.

Hydrocarbon Important Questions for NEET Overview 

Hydrocarbons are compounds made of carbon and hydrogen atoms. They are the foundation of organic chemistry and play a key role in various chemical reactions. Understanding hydrocarbons helps students solve reaction-based questions, predict products, and identify different types of hydrocarbons. Practicing questions on hydrocarbons is important for NEET as it helps in concept clarity, speed, and accuracy in the exam. Questions from this topic appear in organic chemistry sections, and having a good grasp of the subject can improve overall performance.

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What are Hydrocarbons?

Hydrocarbons are chemical compounds that contain only carbon and hydrogen atoms. They are classified into alkanes, alkenes, alkynes, and aromatic hydrocarbons. Alkanes are saturated hydrocarbons with single bonds, while alkenes and alkynes have double and triple bonds, respectively. Aromatic hydrocarbons contain benzene rings. These compounds are found in fuels, natural gas, and various industrial products.

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Practice Important Questions of Hydrocarbon for NEET

Q1 The correct order of reactivity of alkene towards an electrophile is mentioned in:

1. CH₂ = CH - Cl > CH₂ = CH - OCH₃
2. CH₂ = CHCl < CH₂ = CCl₂
3.  CH₂ = CH₂ > CH₃ - CH = CH₂
4. CH₂ = CH - OCH₃ > CH₂ = CH - CH₂ - OH

Q2 CH₂ = CH₂ reacts with HCl to form:

1. CH₂ClCH₂Cl
2. CH₂ClCH₃
3. CH₂ClCH₂Cl
4. CH₃CHCl₂

Q3 For the ionic reaction of hydrochloric acid with the following alkenes, predict the correct sequence of reactivity as measured by reaction rates:

(I) ClCH = CH₂
(II) (CH₃)₂C = CH₂
(III) OHC · CH = CH₂
(IV) (NC)₂C = C(CN)₂

1.  IV > I > III > II
2.  I > IV > II > III
3. III > II > IV > I
4.  II > I > III > IV

Q4 Sodalime decarboxylation of sodium propionate produces:

1. Propane
2. Ethane
3. Methane
4. Butane

Q5 H₃C - CH - CH = CH₂ + HBr → A
|
CH₃
A (predominantly) is:

Q6 CH₃ - C = CH₂ + HBr →
|
CH₃
Product is:

Q7 Conformation of ethane in which hydrogen atoms attached to two carbon atoms are closest to each other is known as;

1. eclipsed
2. skew boat
3. staggered
4. partially eclipsed

Q8 CH₃ - CH₂ - C ≡ CH ⇌ CH₃ C ≡ C ; A
B
A - CH₃
and B are -

1. alcoholic KOH and NaNH₂
2. NaNH₂ and alcoholic KOH
3. NaNH₂ and Lindlar catalyst
4. Lindlar and NaNH₂ catalyst

Q9 Consider the following reaction

RC ≡ CR' + H₂ → R - C = C - R'
| |
H H

What does A refer to?

1. Na / liq. NH₃
2. Pd / C
3. Both (A) and (B)
4. None of these

Q10 The most stable configuration of n-butane will be;

1. skew
2. eclipsed
3. gauche
4. anti

Hydrocarbon Important Questions for NEET PDF

Hydrocarbons are an essential topic for NEET preparation. To help students practice, we have compiled a PDF containing important questions along with solutions. This PDF will provide a structured way to revise concepts and improve problem-solving skills. Download the PDF now and start practicing to boost your confidence for NEET 2025.

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