Purification & Characterisation of Organic Compounds JEE Main PYQs PDF, 2020–2026

Purification & Characterisation of Organic Compounds questions per year

in the free PDF asked, not in the PDFThe PDF only has questions we can print in full with a checked answer, so it holds 123 of the 128 asked.

Topic-wise weightage by year

How many Purification & Characterisation of Organic Compounds questions each topic had in every JEE Main year (all shifts), counting every question asked, including ones not in the PDF. Darker cells mean more questions.

Swipe the table sideways for older years.

Newest questions (2026)

The 12 newest of the 20 JEE Main 2026 Purification & Characterisation of Organic Compounds questions in the free PDF, latest shift first. The 2026 papers asked 21 in all.

1. JEE Main 2026 · 8 Apr · Shift 2 · Purification Methods

   Given below are two statements :

   Statement I : Vapours of the liquid with higher boiling point condense before vapours of the liquid with lower boiling points in fractional distillation.

   Statement II : The vapours rising up in the fractionating column become richer in high boiling component of the mixture.

   In the light of the above statements, choose the correct answer from the options given below :

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2. JEE Main 2026 · 6 Apr · Shift 2 · Purification Methods

   Given below are two statements :

   Statement I : A mixture of ${\mathrm{C}}_{{12}}{\mathrm{H}}_{{22}}{\mathrm{O}}_{{11}}$ (sugar) and NaCl can be separated by dissolving sugar in alcohol, due to differential solubility.

   Statement II : Rose essence from rose petals is seperated by steam distillation due to its high volatility and insolubility in ${\mathrm{H}}_{2}{\mathrm{O}}$.

   In the light of the above statements, choose the correct answer from the options given below :

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3. JEE Main 2026 · 6 Apr · Shift 1 · Purification Methods

   ${\mathrm{R}}_{{{\mathrm{f}}}}$ value for 2-methylpropene in a solvent system (Ethyl acetate + ether) is 0.42 . 2-methylpropene is treated with dilute ${\mathrm{H}}_{2}{\mathrm{SO}}_{4}$ to give major organic product $({\mathrm{X}})$. $R_{f}$ value for $(X)$ in the same solvent system under identical condition will be:

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4. JEE Main 2026 · 5 Apr · Shift 2 · Purification Methods

   $\text{ Match List - I with List - II.}$

   List - I Purification technique		List - II Used to separate
   A.	Simple distillation	I.	Steam volatile compound
   B.	Fractional distillation	II.	Two liquids with large difference in boiling points
   C.	Steam distillation	III.	Liquid decomposing at its boiling point
   D.	Distillation under reduced pressure	IV.	Two liquids with close boiling points

   Choose the correct answer from the options given below :

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5. JEE Main 2026 · 4 Apr · Shift 2 · Quantitative Elemental Analysis

   In sulphur estimation, $2.0\times {10}^{{-3}}{\ \mathrm{mol}}$ of an organic compound $({\mathrm{X}})$ (molar mass $76{\ \mathrm{g}}{\ \mathrm{mol}}^{{-1}}$ ) gave 0.4813 g of barium sulphate (molar mass $233{\ \mathrm{g}}{\ \mathrm{mol}}^{{-1}}$ ). The percentage of sulphur in the compound $({\mathrm{X}})$ is $\_\_\_\_$ $\times {10}^{{-1}}\%$ (Nearest integer)

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6. JEE Main 2026 · 4 Apr · Shift 1 · Quantitative Elemental Analysis

   2.0 g of a bromo hydrocarbon $({\mathrm{X}})$ was subjected to Carius analysis, gave 3.36 g of AgBr . The percentage of carbon in the compound $({\mathrm{X}})$ is $26.7\%$. Total number of carbon atoms in the empirical formula for compound $({\mathrm{X}})$ is $\_\_\_\_$ .

   (Given molar mass in ${\mathrm{g}}{\mathrm{mol}}^{{-1}}{\mathrm{H}}:1,{\mathrm{C}}:12,{\mathrm{Br}}:80,{\mathrm{Ag}}:108$ )

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7. JEE Main 2026 · 2 Apr · Shift 2 · Quantitative Elemental Analysis

   Complete combustion of $X$ g of an organic compound gave $0.25$ g of $CO_{2}$ and $0.12$ g of $H_{2}O$. If the % of carbon is $25\%$ and of hydrogen is $4.89\%$, then $X=\underline{{\phantom{}}}\times {10}^{{-3}}$ g. (Nearest integer)
   
   (Molar mass of C, H and O are 12, 1 and 16 g mol${}^{{-1}}$ respectively.)

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8. JEE Main 2026 · 2 Apr · Shift 2 · Quantitative Elemental Analysis

   Consider the following reactions sequence

   

   When the product (P) is subjected to Carius analysis using AgNO₃, 1.0 g of the product (P) will produce _________ g of the precipitate of AgBr. (Nearest Integer)

   (Given : molar mass in g mol^-1 C : 12, H : 1, O : 16, N : 14, Br : 80, Ag : 108)

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9. JEE Main 2026 · 2 Apr · Shift 1 · Purification Methods

   Given below are two statements :

   Statement (I) : 1,2,3-Trihydroxypropane can be separated from water by simple distillation.

   Statement (II) : An azeotropic mixture cannot be separated by fractional distillation.

   In the light of the above statements, choose the correct answer from the options given below :

   Solve it online →

10. JEE Main 2026 · 28 Jan · Shift 1 · Quantitative Elemental Analysis

    0.53 g of an organic compound $({\mathrm{x}})$ when heated with excess of nitric acid (concentrated) and then with silver nitrate gave 0.75 g of silver bromide precipitate. 1.0 g of $({\mathrm{x}})$ gave 1.32 g of ${\mathrm{CO}}_{2}$ gas on combustion. The percentage of hydrogen in the compound $(x)$ is $\_\_\_\_$ %. [Nearest Integer]

    [Given: Molar mass in ${\mathrm{g}}{\mathrm{mol}}^{{-1}}{\mathrm{H}}:1,{\mathrm{C}}:12,{\mathrm{Br}}:80,{\mathrm{Ag}}:108,{\mathrm{O}}:16$; Compound (x) : ${\mathrm{C}}_{{{\mathrm{x}}}}{\mathrm{H}}_{{{\mathrm{y}}}}{\mathrm{Br}}_{{{\mathrm{z}}}}]$

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11. JEE Main 2026 · 28 Jan · Shift 2 · Quantitative Elemental Analysis

    A student has been given 0.314 g of an organic compound and asked to estimate Sulphur. During the experiment, the student has obtained 0.4813 g of barium sulphate. The percentage of sulphur present in the compound is _________. (Given Molar mass in g mol⁻¹ S: 32, BaSO₄: 233)

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12. JEE Main 2026 · 28 Jan · Shift 1 · Purification Methods

    Method used for separation of mixture of products ( B and C ) obtained in the following reaction is

    
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Practise the 2026 Purification & Characterisation of Organic Compounds questions online

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