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Day 321: JEE Mains Chemistry

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

  1. Question 1

    Coordination Compounds. Asked once: 4 Apr 2024 (same type asked 9 times) See all 9 of this type

    132
    If an iron (III) complex with the formula [Fe(NH3)x(CN)y]−\left\lbrack Fe\left( NH_{3} \right)_{x}(CN)_{y} \right\rbrack^{-}has no electron in its ege_{g} orbital, then the value of x+yx + y is

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  2. Question 2

    Coordination Compounds. Asked once: 5 Apr 2024 (same type asked 9 times) See all 9 of this type

    127
    The metal atom present in the complex MABXL (where A,B,XA,B,X and LL are unidentate ligands and MM is metal) involves sp3sp^{3} hybridization. The number of geometrical isomers exhibited by the complex is:

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  3. Question 3

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 27 Jul 2022 (same type asked 9 times) See all 9 of this type

    49
    In Carius method of estimation of halogen. 0.45 g0.45\text{ }g of an organic compound gave 0.36 g0.36\text{ }g of AgBrAgBr. Find out the percentage of bromine in the compound. (Molar masses: AgBr=188 g mol−1:Br=80 g mol−1AgBr = 188\text{ }g{\text{ }mol}^{- 1}:Br = 80\text{ }g{\text{ }mol}^{- 1} )

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  4. Question 4

    Coordination Compounds. Asked once: 12 Apr 2023 (same type asked 9 times) See all 9 of this type

    35
    Match List I with List II
    List I (Complex)List II (CFSE, in units of Δ0\Delta_{0})
    (A)
    [Cu(NH3)6]2+\left\lbrack Cu\left( NH_{3} \right)_{6} \right\rbrack^{2 +}
    		(I)-0.6
    (B)
    [Ti(H2O)6]3+\left\lbrack Ti\left( H_{2}O \right)_{6} \right\rbrack^{3 +}
    		(II)-2.0
    (C)
    [Fe(CN)6]3−\left\lbrack Fe(CN)_{6} \right\rbrack^{3 -}
    		(III)-1.2
    (D)
    [NiF6]4−\left\lbrack NiF_{6} \right\rbrack^{4 -}
    		(IV)-0.4
    Choose the correct answer from the options given below:

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  5. Question 5

    Chemical Bonding and Molecular Structure. Asked once: 29 Jan 2024 (same type asked 9 times) See all 9 of this type

    58
    The number of species from the following which are paramagnetic and with bond order equal to one is _____
    H2,He2+,O2+,N22−,O22−,F2,Ne2+,B2H_{2},He_{2}^{+},O_{2}^{+},N_{2}^{2 -},O_{2}^{2 -},F_{2},Ne_{2}^{+},B_{2}