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Day 223: JEE Mains Chemistry

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

  1. Question 1

    The d- and f-Block Elements. Asked once: 27 Jan 2024 (same type asked 6 times) See all 6 of this type

    125
    Choose the correct option having all the elements with d10d^{10} electronic configuration from the following:

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  2. Question 2

    The d- and f-Block Elements. Asked once: 10 Apr 2023 (same type asked 6 times) See all 6 of this type

    40
    Which of the following statements are correct? (A) The M3+/M2+M^{3 +}/M^{2 +} reduction potential for iron is greater than manganese (B) The higher oxidation states of first row d-block elements get stabilized by oxide ion. (C) Aqueous solution of Cr2+Cr^{2 +} can liberate hydrogen from dilute acid. (D) Magnetic moment of V2+V^{2 +} is observed between 4.4-5.2 BM Choose the correct answer from the options given below:

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  3. Question 3

    Classification of Elements and Periodicity. Asked once: 1 Feb 2023 (same type asked 6 times) See all 6 of this type

    121
    For electron gain enthalpies of the elements denoted as ΔegH\Delta_{eg}H, the incorrect option is:

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  4. Question 4

    The p-Block Elements. Asked once: 26 Jun 2022 (same type asked 6 times) See all 6 of this type

    41
    Consider the following reaction: A + alkali →\rightarrow B (Major Product) If BB is an oxoacid of phosphorus with no P−HP - H bond, then AA is:

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  5. Question 5

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 6 Apr 2024 (same type asked 5 times) See all 5 of this type

    38
    Which of the following statements are correct? (A) Glycerol is purified by vacuum distillation because it decomposes at its normal boiling point. (B) Aniline can be purified by steam distillation as aniline is miscible in water. (C) Ethanol can be separated from ethanol water mixture by azeotropic distillation because it forms azeotrope. (D) An organic compound is pure, if mixed M.P. is remained same. Choose the most appropriate answer from the options given below:

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