PYQ Vault

Day 254: JEE Mains Chemistry

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

  1. Question 1

    Biomolecules. Asked once: 4 Apr 2024 (same type asked 3 times) See all 3 of this type

    135
    Match List I with List II.
    LIST ILIST II
    A.α\alpha-Glucose and α\alpha-GalactoseI.Functional isomers
    B.α\alpha-Glucose and β\beta-GlucoseII.Homologous
    C.α\alpha-Glucose and α\alpha-FructoseIII.Anomers
    D.α\alpha-Glucose and α\alpha-RiboseIV.Epimers
    Choose the correct answer from the options given below:

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  2. Question 2

    Coordination Compounds. Asked once: 21 Jan 2026 S2 (same type asked 3 times) See all 3 of this type

    49
    Identify the metal ions among Co2+,Ni2+,Fe2+,V3+{Co}^{2 +},{Ni}^{2 +},{Fe}^{2 +},V^{3 +} and Ti2+{Ti}^{2 +} having a spin-only magnetic moment value more than 3.0 BM. The sum of unpaired electrons present in the high spin octahedral complexes formed by those metal ions is____\_\_\_\_ .
  3. Question 3

    Hydrocarbons. Asked once: 24 Jan 2026 S1 (same type asked 3 times) See all 3 of this type

    44
    Arrange the following carbanions in the decreasing order of stability (I) (II) (III) (IV) (V) Choose the correct answer from the options given below :

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  4. Question 4

    Some Basic Concepts of Chemistry. Asked once: 8 Apr 2024 (same type asked 3 times) See all 3 of this type

    147
    Molality of an aqueous solution of urea is 4.44 m4.44\text{ }m. Mole fraction of urea in solution is x×10−3x\times10^{-3}. Value of xx is _______ . (integer answer)
  5. Question 5

    The d- and f-Block Elements. Asked once: 10 Apr 2023 (same type asked 3 times) See all 3 of this type

    37
    Given below are two statements Statement I: Aqueous solution of K2Cr2O7K_{2}Cr_{2}O_{7} is preferred as a primary standard in volumetric analysis over Na2Cr2O7Na_{2}Cr_{2}O_{7} aqueous solution Statement II: K2Cr2O7K_{2}Cr_{2}O_{7} has a higher solubility in water than Na2Cr2O7Na_{2}Cr_{2}O_{7} In the light of the above statements, choose the correct answer from the options given below:

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