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Day 269: JEE Mains Chemistry

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

  1. Question 1

    The p-Block Elements. Asked once: 26 Jul 2022 (same type asked 3 times) See all 3 of this type

    126
    The metal that has very low melting point and its periodic position is closer to a metalloid is :

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  2. Question 2

    The p-Block Elements. Asked once: 31 Jan 2024 (same type asked 3 times) See all 3 of this type

    51
    Molar mass of the salt from NaBr,NaNO3,KINaBr,NaNO_{3},KI and CaF2CaF_{2} which does not evolve coloured vapours on heating with concentrated H2SO4H_{2}SO_{4} is _______ gmol−1gmol^{- 1}, (Molar mass in g mol−1g\ mol^{-1}: Na 23, N 14, K 39, O 16, Br 80, I 127, F 19, Ca 40)

  3. Question 3

    Amines. Asked once: 8 Apr 2023 (same type asked 3 times) See all 3 of this type

    49
    Match List I with List II: benzenediazonium chloride, C6H5N2+Cl−C_{6}H_{5}N_{2}^{+}Cl^{-}, is reacted with reagents in List I to form products in List II. Choose the correct answer from the options given below:

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  4. Question 4

    Chemical Kinetics. Asked once: 11 Apr 2023 (same type asked 3 times) See all 3 of this type

    125
    For a chemical reaction A+B→A + B \rightarrow Product, the order is 1 with respect to AA and BB. The measured data are: Rate =0.10 mol L−1 s−1= 0.10\ mol{\text{ }L}^{- 1}{\text{ }s}^{- 1} when [A]=20 mol L−1\lbrack A\rbrack = 20\ mol{\text{ }L}^{- 1} and [B]=0.5 mol L−1\lbrack B\rbrack = 0.5\ mol{\text{ }L}^{- 1}; Rate =0.40 mol L−1 s−1= 0.40\ mol{\text{ }L}^{- 1}{\text{ }s}^{- 1} when [A]=x mol L−1\lbrack A\rbrack = x\ mol{\text{ }L}^{- 1} and [B]=0.5 mol L−1\lbrack B\rbrack = 0.5\ mol{\text{ }L}^{- 1}; Rate =0.80 mol L−1 s−1= 0.80\ mol{\text{ }L}^{- 1}{\text{ }s}^{- 1} when [A]=40 mol L−1\lbrack A\rbrack = 40\ mol{\text{ }L}^{- 1} and [B]=y mol L−1\lbrack B\rbrack = y\ mol{\text{ }L}^{- 1}. What is the value of xx and yy ?

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  5. Question 5

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

    48
    Which of the following is correct order of ligand field strength?

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