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Day 267: JEE Mains Chemistry

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

  1. Question 1

    Coordination Compounds. Asked once: 30 Jan 2023 (same type asked 3 times) See all 3 of this type

    121
    The Cl−Co−ClCl - Co - Cl bond angle values in a fac- [Co(NH3)3Cl3]\left\lbrack Co\left( NH_{3} \right)_{3}Cl_{3} \right\rbrack complex is/are:

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  2. Question 2

    Electrochemistry. Asked once: 26 Jun 2022 (same type asked 3 times) See all 3 of this type

    147
    Cu(s)+Sn2+(0.001M)→Cu2+(0.01M)+Sn(s)Cu(s) +Sn^{2 +}(0.001M) \rightarrow Cu^{2 +}(0.01M) + Sn(s) The Gibbs free energy change for the above reaction at 298 K298\text{ }K is x×10−1 kJ mol−1x \times10^{- 1}\text{ }kJ{\text{ }mol}^{- 1}. The value of xx is ____\_\_\_\_. [nearest integer] [Given: ECu2+/Cu⊖=0.34 V;ESn2+/Sn⊖=−0.14 V;F=96500Cmol−1E_{Cu^{2 +}/Cu}^{\ominus}= 0.34\text{ }V;E_{Sn^{2 +}/Sn}^{\ominus}= - 0.14\text{ }V;F = 96500Cmol^{- 1} ]

  3. Question 3

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 26 Jun 2022 (same type asked 3 times) See all 3 of this type

    43
    Given below are two statements: Statement I: In 'Lassaigne's Test, when both nitrogen and sulphur are present in an organic compound, sodium thiocyanate is formed. Statement II: If both nitrogen and sulphur are present in an organic compound, then the excess of sodium used in sodium fusion will decompose the sodium thiocyanate formed to give NaCNNaCN and Na2 SNa_{2}\text{ }S. In the light of the above statements, choose the most appropriate answer from the options given below:

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  4. Question 4

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 5 Apr 2024 (same type asked 3 times) See all 3 of this type

    42
    Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R) Assertion (A): Cis form of alkene is found to be more polar than the trans form Reason (R): Dipole moment of trans isomer of 2-butene is zero. In the light of the above statements, choose the correct answer from the options given below:

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  5. Question 5

    Coordination Compounds. Asked once: 6 Apr 2023 (same type asked 3 times) See all 3 of this type

    57
    Number of ambidentate ligands in a representative metal complex [M(en)(SCN)4]\left\lbrack M(en)(SCN)_{4} \right\rbrack is [en == ethylenediamine]