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BITSAT Chemical Kinetics PYQs with Solutions

33 previous year questions from Chemical Kinetics (BITSAT Chemistry) with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

33 questionsChemistry2009–2024Answers + solutions

About Chemical Kinetics PYQs

Chemical Kinetics has 33 previous year questions in the Quantrex Academy BITSAT Chemistry bank. The 33 questions in this list come from BITSAT (33), spanning 2009 to 2024. Each question opens on its own page with the options, the correct answer and the worked solution where available.

BITSAT Chemical Kinetics PYQs with Solutions

About Chemical Kinetics PYQs

Questions by year (this list)

Chemical Kinetics questions with solutions

For the reaction 2 SO_2+O_2 leftharpoons 2 SO_3 , the rate of disappearance of O_2 is 2 × 10^ -4 mol L^ -1 ^ -1 . The rate appearance of SO_3 is

If for a first order reaction, the value of A and E_a are 4 × 10^ 13 s^ -1 and 98.6 kJ mol^ -1 respectively, then at what temperature will its half life period be 10 minutes?

In the chemical reaction A arrow B , what is the order of the reaction? Given that, the rate of reaction doubles if the concentration of A is increased four times.

Calculate the activation energy of a reaction, whose rate constant doubles on raising the temperature from 300 K to 600 K.

In the reaction, A arrow products, If the concentration of the reactant is doubled rate of the reaction remains unchanged. The order of the reaction with respect to A is

In a first order reaction, the concentration of the reactant, decreases from 0.8 M to 0.4 M in 15 minutes. The time taken for the concentration to change from 0.1 M to 0.025 M is

For the decomposition of azomethane, CH_3 N_2 CH_3( g) arrow CH_3 CH_3( g)+N_2( g) a first order reaction, the variation in partial pressure with time at 600 K is given as The

Plots showing the variation of the rate constant (k) with temperature (T) are given below. The plot that follows Arrhenius equation is

In a 1 st order reaction, reactant concentration C varies with time t as :

XmL of H_ 2 gas effuses through a hole in a container in 5 seconds. The time taken for the effusion of the same volume of the gas specified below under identical conditions is :

A radioactive isotope having a half - life period of 3 days was received after 12 days. If 3 g of the isotope is left in the container, what would be the initial mass of the

Given the hypothetical reaction mechanism A I &#10230; B II &#10230; C III &#10230; D IV &#8594; E and the rate as Species formed Rate of its information B 0. 002mol / h per mole

For the chemical reaction 2 O _ 3 ⟶ 3 O _ 2 , the reaction proceeds as follows O _ 3 ⇌ O _ 2 + O (Fast) O + O _ 3 ⟶ 2 O _ 2 ,& (Slow) the rate law expression should be given as

For a reversible& reaction, A ⇌ B ,& which one of the following statement is wrong from the given energy& profile diagram?

Under the same reaction conditions, initial concentration of 1 . 386mol dm ^ - 3 of a substance becomes half in 40s and 20s through first order and zero order kinetics

The rate of a reaction triples when temperature changes from 20 ^ 0 C to 50 ^ 0 C . The energy of activation for the reaction is (R = 8 . 314 JK ^ - 1 mol ^ - 1 )

Which of the following expression is correct for the rate of reaction given below ? 5 Br ^ - (aq) + BrO _ 3 ^ - (aq) + 6H^ + (aq) ⟶ 3 Br _ 2 (aq) + 3 H _ 2 O (l)

For an endothermic reaction, where Δ H represent the enthalpy of reaction in kJ mol ^ - 1 , the minimum value for energy of activation (for forward reaction) will be

A graph is plotted between log K versus (1)/(T) for calculation of activation energy ( E _ a ) . The correct plot is

Consider the reaction : Cl_ 2 (a q)+H_ 2 ~S(a q) arrow S(s)+2 H^ + (a q)+2 Cl^ - (a q) The rate equation for this reaction is rate =k[Cl_ 2 ][H_ 2 ~S] Which of these mechanisms

In the reaction, P+Q ? R+S The time taken for 75 \% reaction of P is twice the time taken for 50 \% reaction of P . The concentration of Q varies with reaction time as shown in

The unit of rate constant for reactions of second order is

In a first order reaction with time the concentration of the reactant decreases

The reduction of peroxydisulphate ion by I ion is expressed by S_ 2 O_ 8 ^ 2- +3 I^ - arrow 2 SO_ 4 ^ 2- +I_ 3 ^ - . If rate of disappearance of I^ - is 9 / 2 × 10^ -3 mol lit ^

A gaseous reaction X_ 2 ( g) Y+(1)/(2) Z(g) There is increase in pressure from 100 mm to 120 mm in 5 minutes. The rate of disappearance of X_ 2 is

Two substances R and S decompose in solution independently, both following first order kinetics. The rate constant of R is twice that of S . In an experiment, the solution

Velocity constant of a reaction at 290 K was found to be 3.2 × 10^ -3 . At 300 K it will be

At high pressure, the entire surface gets covered by a monomolecular layer of the gas follows

2 N_ 2 O_ 5 leftharpoons 4 NO_ 2 +O_ 2 If rate and rate constant for above reaction are 2.40 × 10^ -5 mol L^ -1 s^ -1 and 3 × 10^ -5 s^ -1 respectively, then calculate the

During the kinetic study of the reaction, 2 A+B arrow C+D , following results were obtained: Run [A]/ mol L^ -1 [ B]/ mol L^ -1 Initial rate of formation of D/ mol L^ -1 min^ -1 I

The activation energy for a simple chemical reaction A arrow B is E_ a in forward direction. The activation energy for reverse reaction

The following data are for the decomposition of ammonium nitrite in aqueous solution : The order of reaction is:

The chemical reaction 2 O_ 3 3 O_ 2 proceeds as follows: rate law expression should be:

Related BITSAT Chemistry chapters

Chemical Kinetics in other exams

Given the hypothetical reaction mechanism A I ⟶ B II ⟶ C III ⟶ D IV → E and the rate as Species formed Rate of its information B 0. 002mol / h per mole