Chemistry · JEE

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

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The most important Alkynes: Acidic character, addition of hydrogen, halogens, water and hydrogen halides, polymerization questions for JEE cover conceptual traps, standard results, and numerical patterns from Alkynes: Acidic character, addition of hydrogen, halogens, water and hydrogen halides, polymerization. Goodmarks provides 9+ high-yield MCQs with full solutions.

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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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Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

Which subtopics in Hydrocarbons are high-weightage?

Key areas include Alkynes: Acidic character, addition of hydrogen, halogens, water and hydrogen halides, polymerization. Prioritise these before moving to edge cases.

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