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Day 240: JEE Mains Chemistry

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

  1. Question 1

    Amines. Asked once: 8 Apr 2024 (same type asked 4 times) See all 4 of this type

    134
    Given below are two statements: Statement (I): All the following compounds react with p-toluene sulfonyl chloride.
    C6H5NH2 (C6H5)2NH (C6H5)3 NC_{6}H_{5}NH_{2}\ \left( C_{6}H_{5} \right)_{2}NH\ \left( C_{6}H_{5} \right)_{3}\text{ }N
    Statement (II): Their products in the above reaction are soluble in aqueous NaOHNaOH. In the light of the above statements, choose the correct answer from the options given below.

    Tap an option to check your answer.

  2. Question 2

    Classification of Elements and Periodicity. Asked once: 25 Jan 2023 (same type asked 4 times) See all 4 of this type

    127
    Which of the following represents the correct order of metallic character of the given elements?

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  3. Question 3

    Equilibrium. Asked once: 23 Jan 2026 S2 (same type asked 4 times) See all 4 of this type

    46
    X2(g)+Y2(g)⇌2Z(g)X_{2}(g) + Y_{2}(g) \rightleftharpoons 2Z(g) X2(g)X_{2}(g) and Y2(g)Y_{2}(g) are added to a 1 L flask and it is found that the system attains the above equilibrium at T(K)T(K) with the number of moles of X2( g),Y2( g)X_{2}(\text{ }g),Y_{2}(\text{ }g) and Z(g)Z(g) being 3, 3 and 9 mol respectively (equilibrium moles). Under this conditions of equilibrium, 10 mol of Z(g)Z(g) is added to the flask and the temperature is maintained at T(K)T(K). Then the number of moles of Z(g)Z(g) in the flask when the new equilibrium is established is ____\_\_\_\_ . (Nearest integer).

  4. Question 4

    Chemical Thermodynamics. Asked once: 31 Jan 2024 (same type asked 4 times) See all 4 of this type

    150
    If 5 moles of an ideal gas expands from 10 L10\text{ }L to a volume of 100 L100\text{ }L at 300 K300\text{ }K under isothermal and reversible condition then work, ww, is −x J-x\text{ }J. The value of xx is ______ . (Given R=8.314 J K−1 mol−1R = 8.314\text{ }J{\text{ }K}^{- 1}{\text{ }mol}^{- 1} )

  5. Question 5

    Electrochemistry. Asked once: 4 Apr 2025 (same type asked 4 times) See all 4 of this type

    124
    The molar conductance of an infinitely dilute solution of ammonium chloride was found to be 185 S cm2 mol−1185\text{ }S{\text{ }cm}^{2}{\text{ }mol}^{- 1} and the ionic conductance of hydroxyl and chloride ions are 170 and 70 S cm2 mol−170\text{ }S{\text{ }cm}^{2}{\text{ }mol}^{- 1}, respectively. If molar conductance of 0.02 M solution of ammonium hydroxide is 85.5 S cm2 mol−185.5\text{ }S{\text{ }cm}^{2}{\text{ }mol}^{- 1}, its degree of dissociation is given by x×10−1x \times 10^{- 1}. The value of xx is ____\_\_\_\_. (Nearest integer)