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Day 173: JEE Mains Chemistry

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

  1. Question 1

    Equilibrium. Asked once: 31 Jan 2023 (same type asked 3 times) See all 3 of this type

    145
    At 98 K98\text{ }K, the solubility of silver chloride in water is 1.434×10−3 g L−11.434 \times10^{- 3}\text{ }g{\text{ }L}^{- 1}. The value of −log⁡Ksp- \log K_{sp} for silver chloride is (Given mass of AgAg is 107.9 g mol−1107.9\text{ }g{\text{ }mol}^{- 1} and mass of ClCl is 35.5 g mol−135.5\text{ }g{\text{ }mol}^{- 1} )

  2. Question 2

    The d- and f-Block Elements. Asked once: 1 Feb 2024 (same type asked 3 times) See all 3 of this type

    53
    The number of white coloured salts among the following is . (A) SrSO4SrSO_{4} (B) Mg(NH4)PO4Mg\left( NH_{4} \right)PO_{4} (c) BaCrO4BaCrO_{4} (D) Mn(OH)2Mn(OH)_{2} (E) PbSO4PbSO_{4} (F) PbCrO4PbCrO_{4} (G) AgBrAgBr (H) PbI2PbI_{2} (I) CaC2O4CaC_{2}O_{4} (J) [Fe(OH)2(CH3COO)]\left\lbrack Fe(OH)_{2}\left( CH_{3}COO \right) \right\rbrack

  3. Question 3

    Coordination Compounds. Asked once: 29 Jan 2024 (same type asked 3 times) See all 3 of this type

    126
    The correct IUPAC name of K2MnO4K_{2}MnO_{4} is

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  4. Question 4

    Structure of Atom. Asked once: 5 Apr 2024 (same type asked 3 times) See all 3 of this type

    51
    The value of Rydberg constant (RH)\left( R_{H} \right) is 2.18×10−18 J2.18 \times10^{- 18}\text{ }J. The velocity of electron having mass 9.1×10−31 kg9.1 \times10^{- 31}\text{ }kg in Bohr's first orbit of hydrogen atom =………×105 ms−1= \ldots\ldots\ldots \times10^{5}{\text{ }ms}^{- 1} (nearest integer)

  5. Question 5

    The d- and f-Block Elements. Asked once: 4 Apr 2024 (same type asked 3 times) See all 3 of this type

    148
    A first-row transition metal with highest enthalpy of atomisation, upon reaction with oxygen at high temperature forms oxides of formula M2OnM_{2}O_{n} (where n=3,4,5)n = 3,4,5). The 'spin-only' magnetic moment value of the amphoteric oxide from the above oxides is ___ BMBM (near integer) (Given atomic number: Sc : 21,Ti:22, V:2321,Ti:22,\text{ }V:23, Cr:24,Mn:25,Fe:26,Co:27,Ni:28,Cu:29Cr:24,Mn:25,Fe:26,Co:27,Ni:28,Cu:29, Zn:30)Zn:30)