JEE Advanced
Chemistry
Chemical Kinetics and Nuclear Chemistry
Previous Years Questions

MCQ (Single Correct Answer)

Match the rate expressions in LIST-I for the decomposition of $X$ with the corresponding profiles provided in LIST-II. $X_{\mathrm{s}}$ and $\mathrm{k...
For the elementary reaction M $$\to$$ N, the rate of disappearance of M increases by a factor of 8 upon doubling the concentration of M. The order of ...
The value of d in cm (shown in the figure), as estimated from Graham's law, is
The experimental value of d is found to be smaller than the estimate obtained using Graham's law. This is due to
In the reaction, P + Q $$\to$$ R + S, the time taken for 75% reaction of P is twice the time taken for 50% reaction of P. The concentration of Q varie...
Plots showing the variation of the rate constant ($$k$$) with temperature ($$T$$) are given below. The point that follows Arrhenius equation is

MCQ (More than One Correct Answer)

For the following reaction, $$2X + Y\buildrel k \over \longrightarrow P$$ the rate of reaction is $${{d[P]} \over {dt}} = k[X]$$. Two moles of X are ...
Which of the following plots is(are) correct for the given reaction?([P]0 is the initial concentration of P)...
In the decay sequence. x1, x2, x3 and x4 are particles/radiation emitted by the respective isotopes. The correct option(s) is(are)...
For a first order reaction $$A\left( g \right) \to 2B\left( g \right) + C\left( g \right)$$ at constant volume and $$300K,$$ the total pressure at the...
In a bimolecular reaction, the steric factor $$P$$ was experimentally determined to be $$4.5.$$ The correct option(s) among the following is (are)
According to the Arrhenius equation,
A plot of the number of neutrons (N) against the number of protons (P) of stable nuclei exhibits upward deviation from linearity for atomic number, Z ...
The % yield of ammonia as a function of time in the reaction N2(g) + 3H2(g) $$\rightleftharpoons$$ 2NH3(g), $$\Delta$$H < 0 at (P, T1) is given bel...
In the nuclear transmutation 9Be4 + X $$\to$$ 8Be4 + Y (X, Y) is (are)
For the first order reaction 2N2O5 (g) $$\to$$ 4NO2 (g) + O2 (g)

Numerical

$$_{92}^{238}U$$ is known to undergo radioactive decay to form $$_{82}^{206}Pb$$ by emitting alpha and beta particles. A rock initially contained 68 $...
The decomposition reaction$$2{N_2}{O_5}(g)\buildrel \Delta \over \longrightarrow 2{N_2}{O_4}(g) + {O_2}(g)$$ is started in a closed cylinder under i...
Consider the kinetic data given in the following table for the reaction A + B + C $$ \to $$ Product. The rate of the reaction for [A] = 0.15 mol dm-3,...
Consider the following reversible reaction, $$A\left( g \right) + B\left( g \right) \to AB\left( g \right).$$ The activation energy of the backward r...
A closed vessel with rigid walls contains 1 mol of $${}_{92}^{238}U$$ and 1 mol of air at 298 K. Considering complete decay of $${}_{92}^{238}U$$ to $...
In dilute aqueous H2SO4, the complex diaquodioxalatoferrate(II) is oxidized by $$MnO_4^-$$. For this reaction, the ratio of the rate of change of [H+]...
The periodic table consists of 18 groups. An isotope of copper, on bombardment with protons undergoes a nuclear reaction yielding element X as shown b...
An organic compound undergoes first-order decomposition. The time taken for its decomposition to 1/8 and 1/10 of its initial concentration are t1/8 an...
The concentration of R in the reaction R $$\to$$ P was measured as a function of time and the following data is obtained .tg {border-collapse:colla...
The number of neutrons emitted when $${}_{92}^{235}U$$ undergoes controlled nuclear fission to $${}_{54}^{142}Xe$$ and $${}_{38}^{90}Sr$$ is

Subjective

At constant temperature and volume, X decomposes as 2X(g) $$\to$$ 3Y(g) + 2Z(g); Px is the partial pressure of X. .tg {border-collapse:collapse;bo...
For the given reactions, A + B $$\to$$ Products, following data were obtained .tg {border-collapse:collapse;border-spacing:0;margin: 0 auto} .tg td...
The rate of a first order reaction is 0.04 mol litre-1 s-1 at 10 minutes and 0.03 mol litre-1 s-1 at 20 minutes after initiation. Find the half-life o...
The vapour pressure of the two miscible liquids (A) and (B) are 300 and 500 mm of Hg respectively. In a flask 10 moles of (A) is mixed with 12 moles o...
A hydrogenation reaction is carried out at 500 K. If the same reaction is carried out in the presence of a catalyst at the same rate, the temperature ...
The rate constant for an isomerisation reaction, A $$\to$$ B is 4.5 $$\times$$ 10-3 min-1. If the initial concentration of A is 1 M, calculate the rat...
The rate constant of a reaction is 1.5 $$\times$$ 107 s-1 at 50oC and 4.5 $$\times$$ 107 s-1 at 100oC. Evaluate the Arrhenius parameters A and Ea....
The ionisation constant of $$NH_4^+$$ in water is 5.6 $$\times$$ 10-10 at 25oC. The rate constant for the reaction of $$NH_4^+$$ and $$OH^-$$ to form ...
At 380oC, the half-life period for the first order decomposition of H2O2 is 360 min. Calculate the time required for 75% decomposition at 450oC....
A first order reaction A $$\to$$ B, requires activation energy of 70 kJ mol-1. When 20% solution of A was kept at 25oC for 20 minutes, 25% decompositi...
The decomposition of N2O5 according to the equation: 2N2O5 (g) $$\to$$ 4NO2(g) + O2(g) is a first order reaction. After 30 min. from the start of the ...
EXAM MAP
Joint Entrance Examination
JEE MainJEE AdvancedWB JEE
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Medical
NEET