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Day 306: JEE Mains Chemistry

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

  1. Question 1

    Hydrocarbons. Asked once: 25 Jul 2022 (same type asked 4 times) See all 4 of this type

    150
    The total number of monobromo derivatives formed by the alkanes with molecular formula C5H12C_{5}H_{12} is (excluding stereo isomers)

  2. Question 2

    The p-Block Elements. Asked once: 8 Apr 2023 (same type asked 4 times) See all 4 of this type

    46
    Which halogen is known to cause the reaction given below?
    2Cu2++4X−→Cu2X2( s)+X22Cu^{2 +}+ 4X^{-}\rightarrow Cu_{2}X_{2}(\text{ }s) +X_{2}

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  3. Question 3

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

    53
    Number of amine compounds from the following giving solids which are soluble in NaOHNaOH upon reaction with Hinsberg's reagent is _________

  4. Question 4

    Classification of Elements and Periodicity. Asked once: 28 Jul 2022 (same type asked 4 times) See all 4 of this type

    122
    The correct decreasing order for metallic character is

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  5. Question 5

    Equilibrium. Asked once: 6 Apr 2023 (same type asked 4 times) See all 4 of this type

    142
    The equilibrium composition for the reaction PCl3+Cl2⇌PCl5PCl_{3}+Cl_{2}\rightleftharpoons PCl_{5} at 298 K298\text{ }K is given below.
    [PCl3]eq=0.2 mol L−1[Cl2]eq=0.1 mol L−1,[PCl5]eq=0.40 mol L−1\begin{matrix} \left\lbrack PCl_{3} \right\rbrack_{eq}= 0.2\text{ }mol{\text{ }L}^{- 1} & \left\lbrack Cl_{2} \right\rbrack_{eq}= 0.1\text{ }mol{\text{ }L}^{- 1}, \\ \left\lbrack PCl_{5} \right\rbrack_{eq}= 0.40\text{ }mol{\text{ }L}^{- 1} & \end{matrix}
    If 0.2 mol0.2\text{ }mol of Cl2Cl_{2} is added at the same temperature, the equilibrium concentrations of PCl5PCl_{5} is ____×10−2 mol L−1\times10^{- 2}\text{ }mol{\text{ }L}^{- 1}. Given: KcK_{c} for the reaction at 298 K298\text{ }K is 20