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Day 425: JEE Mains Chemistry

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

  1. Question 1

    Haloalkanes and Haloarenes. Asked once: 4 Apr 2025

    42
    Predict the major product of the following reaction sequence :-

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  2. Question 2

    Hydrocarbons. Asked once: 28 Jan 2026 S2

    26
    Identify the correct statements: The presence of −NO2-NO_{2} group in benzene ring (A) activates the ring towards electrophilic substitutions. (B) deactivates the ring towards electrophilic substitutions. (C) activates the ring towards nucleophilic substitutions. (D) deactivates the ring towards nucleophilic substitutions.

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  3. Question 3

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 21 Jan 2026 S2

    40
    Given below are four compounds: (A) n-propyl chloride (B) iso-propyl chloride (C) sec-butyl chloride (D) neo-pentyl chloride Percentage of carbon in the one which exhibits optical isomerism is:

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  4. Question 4

    Organic Reaction Mechanisms. Asked once: 5 Apr 2024

    138
    Identify AA and BB in the given chemical reaction sequence: -

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  5. Question 5

    Solutions. Asked once: 29 Jan 2025

    37
    1.24 g of AX2AX_{2} (molar mass 124 g mol−1124\text{ }g{\text{ }mol}^{- 1} ) is dissolved in 1 kg of water to form a solution with boiling point of 100.0156∘C100.0156^{\circ}C, while 25.4 g of AY2AY_{2} (molar mass 250 g mol−1250\text{ }g{\text{ }mol}^{- 1} ) in 2 kg of water constitutes a solution with a boiling point of 100.0260∘C100.0260^{\circ}C.Kb(H2O)=0.52 K kg mol−1K_{b}\left( H_{2}O \right)= 0.52\text{ }K\text{ }kg{\text{ }mol}^{- 1} Which of the following is correct?

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