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Day 132: JEE Mains Chemistry

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

  1. Question 1

    Electrochemistry. Asked once: 30 Jan 2023 (same type asked 5 times) See all 5 of this type

    146
    The electrode potential of the following half-cell at 298 K298\text{ }K X∣X2+(0.001M)∥Y2+(0.01M)∣YX\left| X^{2 +}(0.001M) \parallel Y^{2 +}(0.01M) \right|Y is ____×10−2 V\times10^{- 2}\text{ }V (Nearest integer). Given: EX2+∣X0=−2.36 VE_{X^{2 +}\mid X}^{0}= - 2.36\text{ }V
    EY2+∣Y0=+0.36 V2.303RTF=0.06 V\begin{matrix} & E_{Y^{2 +}\mid Y}^{0}= + 0.36\text{ }V \\ & \frac{2.303RT}{F}= 0.06\text{ }V \end{matrix}

  2. Question 2

    Haloalkanes and Haloarenes. Asked once: 29 Jan 2025 (same type asked 5 times) See all 5 of this type

    105
    Which among the following halides will generate the most stable carbocation in Nucleophillic substitution reaction?

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  3. Question 3

    Biomolecules. Asked once: 5 Apr 2024 (same type asked 5 times) See all 5 of this type

    140
    Coagulation of egg, on heating is because of:

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  4. Question 4

    The d- and f-Block Elements. Asked once: 4 Apr 2024 (same type asked 5 times) See all 5 of this type

    56
    Consider the following reaction MnO2+KOH+O2→A+H2OMnO_{2}+ KOH +O_{2}\rightarrow A +H_{2}O. Product ' AA ' in neutral or acidic medium disproportionate to give products ' BB ' and ' CC ' along with water. The sum of spin-only magnetic moment values of BB and CC is ____ BM. (nearest integer) (Given atomic number of MnMn is 25)

  5. Question 5

    Coordination Compounds. Asked once: 24 Jan 2023 (same type asked 5 times) See all 5 of this type

    35
    The primary and secondary valencies of cobalt respectively in [Co(NH3)5Cl]Cl2\left\lbrack Co\left( NH_{3} \right)_{5}Cl \right\rbrack Cl_{2} are:

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