PYQ Vault

Day 441: JEE Mains Chemistry

5 questions. Try each one first, then open its answer.

  1. Question 1

    Haloalkanes and Haloarenes. Asked once: 28 Jan 2025

    29
    Given below are two statements : Statement I : Et2N−CH2−CH2−ClEt_{2}N-CH_{2}-CH_{2}-Cl will undergo alkaline hydrolysis at a faster rate than Et2CH−CH2−CH2−ClEt_{2}CH-CH_{2}-CH_{2}-Cl. Statement II : In Et2N−CH2−CH2−ClEt_{2}N-CH_{2}-CH_{2}-Cl, intramolecular substitution takes place first by involving lone pair of electrons on nitrogen. In the light of the above statements, choose the most appropriate answer from the options given below :

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  2. Question 2

    Hydrocarbons. Asked once: 22 Jan 2026 S2

    45
    The dibromo compound [P]\lbrack P\rbrack (molecular formula : C9H10Br2C_{9}H_{10}Br_{2} ) when heated with excess sodamide followed by treatment with dilute HCl gives [Q]. On warming [Q] with mercuric sulphate and dilute sulphuric acid yield [R]\lbrack R\rbrack which gives positive Iodoform test but negative Tollen's test. The compound [P]\lbrack P\rbrack is :

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  3. Question 3

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 4 Apr 2025

    105
    In which pairs, the first ion is more stable than the second? The pairs (A), (B), (C) and (D) are shown in the figure, from top to bottom.

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  4. Question 4

    Organic Reaction Mechanisms. Asked once: 15 Apr 2023

    32
    The product formed in the following multistep reaction is:

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  5. Question 5

    Solutions. Asked once: 23 Jan 2025

    118
    Consider a binary solution of two volatile liquid components 1 and 2. x1x_{1} and y1y_{1} are the mole fractions of component 1 in liquid and vapour phase, respectively. The slope and intercept of the linear plot of 1x1\frac{1}{x_{1}} vs 1y1\frac{1}{y_{1}} are given respectively as :

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