PYQ Vault

Day 498: JEE Mains Chemistry

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

  1. Question 1

    Biomolecules. Asked once: 2021 Paper 4

    42
    Which of the following is correct structure of α\alpha-anomer of maltose

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  2. Question 2

    Chemical Bonding and Molecular Structure. Asked once: 27 Jun 2022

    122
    Identify the incorrect statement for PCl5PCl_{5} from the following.

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  3. Question 3

    Chemical Kinetics. Asked once: 29 Jan 2023

    146
    For conversion of compound A→BA \rightarrow B, the rate constant of the reaction was found to be 4.6×10−5 L mol−1 s−14.6 \times10^{- 5}\text{ }L{\text{ }mol}^{- 1}{\text{ }s}^{- 1}. The order of the reaction is___
  4. Question 4

    Chemical Thermodynamics. Asked once: 13 Apr 2023

    135
    What happens when methane undergoes combustion in systems A and B respectively?

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  5. Question 5

    Classification of Elements and Periodicity. Asked once: 29 Jan 2024

    139
    Given below are two statements: Statement I: Fluorine has most negative electron gain enthalpy in its group. Statement II: Oxygen has least negative electron gain enthalpy in its group. In the light of the above statements, choose the most appropriate from the options given below.

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