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Day 395: JEE Mains Chemistry

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

  1. Question 1

    Aldehydes, Ketones and Carboxylic Acids. Asked once: 5 Apr 2026 S2

    40
    Complete the following reaction sequence and give the name of major product ' P '.

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  2. Question 2

    Amines. Asked once: 5 Apr 2026 S1

    43
    Identify the incorrect statements : (A) Benzylamine is a stronger base than aniline. (B) 4-Methoxyaniline can be synthesized by Gabriel phthalimide synthesis. (C) 2-Phenylacetamide, C6H5CH2CONH2C_{6}H_{5}CH_{2}CONH_{2}, with Br2Br_{2}, NaOHNaOH gives a primary aromatic amine. (D) 4-Nitroaniline treated with (i) NaNO2NaNO_{2}, HClHCl, 0∘C0^{\circ}C, (ii) Δ\Delta: the product will dissolve in NaOHNaOH. Choose the correct answer from the options given below :

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  3. Question 3

    Biomolecules. Asked once: 7 Apr 2025

    101
    Given below are two statements : Statement (I) : On hydrolysis, oligo peptides give rise to fewer number of α\alpha-amino acids while proteins give rise to a large number of β\beta-amino acids. Statement (II) : Natural proteins are denatured by acids which convert the water soluble form of fibrous proteins to their water insoluble form. In the light of the above statements, choose the most appropriate answer from the options given below :

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  4. Question 4

    Chemical Bonding and Molecular Structure. Asked once: 24 Jan 2026 S1

    29
    Given below are statements about some molecules/ions. Identify the CORRECT statements. (A) The dipole moment value of NF3{NF}_{3} is higher than that of NH3{NH}_{3}. (B) The dipole moment value of BeH2{BeH}_{2} is zero. (C) The bond order of O22−O_{2}^{2 -} and F2F_{2} is same. (D) The formal charge on the central oxygen atom of ozone is -1 . (E) In NO2{NO}_{2}, all the three atoms satisfy the octet rule, hence it is very stable. Choose the correct answer from the options given below :

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  5. Question 5

    Chemical Kinetics. Asked once: 4 Apr 2026 S1

    32
    Consider the first order reaction R→PR \rightarrow P.The fraction of molecules decomposed in the given first order reaction can be expressed as

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