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Day 323: JEE Mains Chemistry

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

  1. Question 1

    Some Basic Concepts of Chemistry. Asked once: 24 Jan 2025 (same type asked 8 times) See all 8 of this type

    48
    Xg of benzoic acid on reaction with aq. NaHCO3NaHCO_{3} release CO2CO_{2} that occupied 11.2 L volume at STP. X is ____\_\_\_\_ g .

  2. Question 2

    Some Basic Concepts of Chemistry. Asked once: 28 Jun 2022 (same type asked 8 times) See all 8 of this type

    150
    0.01MKMnO40.01MKMnO_{4} solution was added to 20.0 mL20.0\text{ }mL of 0.05M0.05M Mohr's salt solution through a burette. The initial reading of 50 mL50\text{ }mL burette is zero. The volume of KMnO4KMnO_{4} solution left in the burette after the end point is mLmL. (nearest integer)

  3. Question 3

    Classification of Elements and Periodicity. Asked once: 22 Jan 2026 S2 (same type asked 8 times) See all 8 of this type

    37
    Given below are two statements : Statement-I : C<O<N<FC < O < N < F is the correct order in terms of first ionization enthalpy values. Statement-II : S>Se>Te>Po>OS > Se > Te > Po > O is the correct order in terms of the magnitude of electron gain enthalpy values. In the light of the above statements, choose the correct answer from the options given below :

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  4. Question 4

    Classification of Elements and Periodicity. Asked once: 27 Jul 2022 (same type asked 8 times) See all 8 of this type

    126
    Outermost electronic configurations of four elements A, B, C, D are given below: (A) 3 s23{\text{ }s}^{2} (B) 3s23p13s^{2}3p^{1} (C) 3 s23p33{\text{ }s}^{2}3p^{3} (D) 3 s23p43{\text{ }s}^{2}3p^{4} The correct order of first ionization enthalpy for them is:

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  5. Question 5

    The p-Block Elements. Asked once: 2 Apr 2025 (same type asked 8 times) See all 8 of this type

    39
    Given below are two statements : Statement (I) : The metallic radius of Al is less than that of Ga . Statement (II) : The ionic radius of Al3+{Al}^{3 +} is less than that of Ga3+{Ga}^{3 +}. In the light of the above statements, choose the most appropriate answer from the options given below :

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