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Day 153: JEE Mains Chemistry

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

  1. Question 1

    Alcohols, Phenols and Ethers. Asked once: 31 Jan 2023 (same type asked 4 times) See all 4 of this type

    33
    An organic compound 'A' with empirical formula C6H6OC_{6}H_{6}O gives sooty flame on burning. Its reaction with bromine solution in low polarity solvent results in high yield of BB. BB is

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  2. Question 2

    The p-Block Elements. Asked once: 13 Apr 2023 (same type asked 4 times) See all 4 of this type

    44
    ClF5ClF_{5} at room temperature is a:

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  3. Question 3

    Classification of Elements and Periodicity. Asked once: 29 Jan 2023 (same type asked 4 times) See all 4 of this type

    142
    Total number of acidic oxides among N2O3,NO2, N2O,Cl2O7,SO2,CO,CaO,Na2ON_{2}O_{3},NO_{2},{\text{ }N}_{2}O,Cl_{2}O_{7},SO_{2},CO,CaO,Na_{2}O and NONO is____

  4. Question 4

    Chemical Bonding and Molecular Structure. Asked once: 24 Jan 2023 (same type asked 4 times) See all 4 of this type

    45
    Order of covalent character: A. KF>KI;LiF>KFKF > KI;LiF > KF B. KF<KI;LiF>KFKF < KI;LiF > KF C. SnCl4>SnCl2;CuCl>NaClSnCl_{4}>SnCl_{2};CuCl > NaCl D. LiF>KF;CuCl<NaClLiF > KF;CuCl < NaCl E. KF<KI;CuCl>NaClKF < KI;CuCl > NaCl Choose the correct answer from the options given below:

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  5. Question 5

    Alcohols, Phenols and Ethers. Asked once: 8 Apr 2023 (same type asked 4 times) See all 4 of this type

    140
    A compound ' XX ' when treated with phthalic anhydride in presence of concentrated H2SO4H_{2}SO_{4} yields ' YY '. ' YY ' is used as an acid/base indicator. ' XX ' and ' YY ' are respectively:

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