Chemistry · JEE

Alkynes: Acidic character, addition of hydrogen, halogens, water and hydrogen halides, polymerization Previous Year Questions for JEE

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Part of Hydrocarbons in JEE Main Chemistry.

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Q1ChemistryUnit 15: Hydrocarbons

Methyl acetylene is also known as:

Q2ChemistryUnit 15: Hydrocarbons

The reagent

\boldsymbol{X}

used for the following reaction is:

\mathbf{R}-\mathbf{C}=\mathbf{C R}^{\prime}+\mathbf{H}_{2} \stackrel{\mathbf{X}}{\longrightarrow} \underset{\mathbf{H}^{\prime}}{\mathbf{C}} \mathbf{C}=\mathbf{C}_{\mathbf{H}}^{\prime \mathbf{R}^{\prime}}

Q3ChemistryUnit 15: Hydrocarbons

A mixture of oxygen and ethyne is burnt for welding. Why a mixture of ethyne and air is not used?

Q4ChemistryUnit 15: Hydrocarbons

Which of the following is true:

Q5ChemistryUnit 15: Hydrocarbons

Acetylene gives precipitate with ammonical silver nitrate is due to:

Q6ChemistryUnit 15: Hydrocarbons

\boldsymbol{C H}_{3}-\boldsymbol{C} \equiv \boldsymbol{C H}

The IUPAC name of the compound is:

Q7ChemistryUnit 15: Hydrocarbons

Treatment of calcium carbide with water gives:

Q8ChemistryUnit 15: Hydrocarbons

Acetylene polymerizes to give:

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Frequently asked questions

Why practise PYQs for Alkynes: Acidic character, addition of hydrogen, halogens, water and hydrogen halides, polymerization?

PYQs reveal recurring concepts, common traps, and the difficulty level JEE expects. Solving them builds exam temperament and time management.

Does Goodmarks have actual JEE past papers?

Our bank includes exam-style MCQs aligned with JEE Main Chemistry syllabus for Alkynes: Acidic character, addition of hydrogen, halogens, water and hydrogen halides, polymerization, covering the same topics as previous year papers.

How should I use PYQs for Hydrocarbons?

Solve timed sets, review every explanation, note weak subtopics, then revisit with focused practice on Goodmarks.

Are PYQ solutions step-by-step?

Yes. Every question includes the correct answer and a detailed explanation showing the reasoning.