New chat PYQ Library Doubts Rank report

Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →

Chemical Kinetics

23 questions · Chemistry · IIT JAM

Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.

PYQ Library
IIT JAM
Chemistry
Chemical Kinetics

Chemical Kinetics

23 questions · Chemistry · IIT JAM

The substances, A, B and C undergo chemical reactions according to the scheme given below. At time $t = 0$ , the $[A] = 0.11$ M. Considering them to be first order reactions, the concentration of B (in M) at equilibrium is Includes diagram2025 · Q27 · MCQ
For the reaction $Me Me + KCN MeOH/H_{2} O Me Me CH_{2} CH_{2}$ if the concentration of KCN is increased four times, then the…2024 · Q3 · MCQ
For a zero-order reaction P → Q, the concentration of P becomes half of its initial concentration in 30 minutes after starting the reaction. The concentration of P becomes zero at minutes. (rounded off to the…2024 · Q43 · Numerical
For the given elementary reactions, the steady-state concentration of X is $2 P k_{1} X k_{4} ⇌ k_{2} Q + R ↓ S$ 2023 · Q22 · MCQ
For the elementary reaction $C \leftarrow k_{2} A \to k_{1} B, k_{1} = 2 k_{2}$ . At time $t = 0$ , $[A] = A_{0}$ and $[B] = [C] = 0$ . At a later time $t$ ,…2023 · Q45 · Numerical
An elementary reaction 2A → P follows a second order rate law with rate constant 2.5 × 10⁻³ dm³ mol⁻¹ s⁻¹. The time required for the concentration of A to change from 0.4 mol dm⁻³ to 0.2 mol dm⁻³ is s.2023 · Q56 · Numerical
For the reaction $e x t H_{2} e x t P O_{2}^{-} (a q) + e x t O H^{-} (a q) \to e x t H P O_{3}^{2 -} (a q) + e x t H_{2} (g)$ the rate expression is $k [e x t H_{2} e x t P O_{2}^{-}] [e x t O H^{-}]^{2}$ . If the concentration of $e x t H_{2} e x t P O_{2}^{-}$ is doubled, the…2022 · Q9 · MCQ
Half-life ( $t_{1/2}$ ) of a chemical reaction varies with the initial concentration of reactant ( $A_{o}$ ) as given below: The order of the reaction is Includes table2021 · Q28 · MCQ
For the consecutive reaction, $X k_{X} Y k_{Y} Z$ $C_{0}$ is the initial concentration of X. The concentrations of X, Y and Z at time $t$ are $C_{X}$ , $C_{Y}$ and $C_{Z}$ , respectively. The expression for the…2021 · Q30 · MCQ
For the reaction, $Q + R k_{1} k_{- 1} X k_{2} P$ $k_{1} = 2.5 \times 1 0^{5} L mol^{- 1} s^{- 1}$ , $k_{- 1} = 1.0 \times 1 0^{4} s^{- 1}$ and $k_{2} = 10 s^{- 1}$ …2021 · Q59 · Numerical
For the reaction shown in Scheme 1, the concentration profiles of different species are provided. Based on this graph, the correct condition(s) regarding the rate constants is(are) Includes diagram2020 · Q31 · Multiple correct
For a reaction of the type A + B → Products, the unit of the rate constant is mol L⁻¹ s⁻¹. The overall order of the reaction is2019 · Q1 · MCQ
The half-life of the chemical reaction, A → Product, for initial reactant concentrations of 0.1 and 0.4 mol L $^{- 1}$ are 200 and 50 s, respectively. The order of the reaction is2019 · Q15 · MCQ
The turnover frequency (TOF) for the catalytic reaction, A (1 mol) $Catalyst (0.01 mol) 5 hours$ B with 90% yield of the product is hour $^{- 1}$ . (Round off to the nearest integer)2019 · Q56 · Numerical
A radioactive sample decays to 10% of its initial amount in 4600 minutes. The rate constant of this process is hour $^{- 1}$ . (Round off to two decimal places)2019 · Q57 · Numerical
The reaction, A $⟶$ Products, follows first-order kinetics. If [A] represents the concentration of reactant at time $t$ , the INCORRECT variation is shown in2018 · Q27 · MCQ
The time for 50% completion of a zero order reaction is 30 min. Time for 80% completion of this reaction is2018 · Q46 · Numerical
For a first order reaction $A (g) \to 2 B (g) + C (g)$ , the rate constant in terms of initial pressure ( $p_{0}$ ) and pressure at time $t$ ( $p_{t}$ ), is given by2017 · Q29 · MCQ
For a reaction $2 A + B \to C + D$ , if rate of consumption of $A$ is 0.1 mol L⁻¹s⁻¹, the rate of production of $C$ (in mol L⁻¹s⁻¹) is2017 · Q50 · Numerical
For a zero order reaction, the half-life depends on the initial concentration [C₀] of the reactant as2016 · Q27 · MCQ
The rate constants for a reaction at 300 and 350 K are 8 and 160 L mol⁻¹ s⁻¹, respectively. The activation energy of the reaction in kJ mol⁻¹ is __. [Given R = 8.314 J K⁻¹ mol⁻¹]2016 · Q59 · Numerical
The kinetics of the reaction 2N $_{2}$ O $_{5}$ → 4NO $_{2}$ + O $_{2}$ in liquid bromine medium was measured independently for three different initial concentrations of N $_{2}$ O $_{5}$ : 0.11, 0.07 and 0.05 mol L $^{- 1}$ . The half-life of the…2015 · Q26 · MCQ
For a reaction, the rate constant at 25 °C is doubled when the temperature is raised to 45 °C. The activation energy (in kJ mol $^{- 1}$ ) of the reaction is [Given: ln2 = 0.693]2015 · Q57 · Numerical