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Previous year question hub

Chemical Kinetics And Nuclear Chemistry - Physical Chemistry - Chemistry Previous Year Questions

Practice Chemical Kinetics And Nuclear Chemistry - Physical Chemistry - Chemistry previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

40Papers
30Years
53Questions
1Topics

Chemical Kinetics And Nuclear Chemistry question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Chemical Kinetics And Nuclear Chemistry. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Medium 27 49.1%
Easy 18 32.7%
Not classified 6 10.9%
Hard 4 7.3%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

MCQ 19 34.5%
Numerical Answer Type (NAT) 14 25.5%
Subjective 13 23.6%
MSQ 9 16.4%

Subject weightage

Top subjects by unique question coverage.

Chemistry
53 Qs

Most asked topics

Top topics across the included previous year papers.

Physical Chemistry
53 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Chemical Kinetics And Nuclear Chemistry
53 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

JEE Advanced 2026 Paper 1 Online
1 Qs
JEE Advanced 2026 Paper 1 Online
1 Qs
JEE Advanced 2026 Paper 1 Online
1 Qs
JEE Advanced 2026 Paper 2 Online
1 Qs
JEE ADVANCED 2025 PAPER 2 ONLINE
1 Qs
JEE ADVANCED 2024 PAPER 1 ONLINE
1 Qs
JEE ADVANCED 2024 PAPER 2 ONLINE
1 Qs
JEE ADVANCED 2022 PAPER 1 ONLINE
1 Qs
JEE ADVANCED 2021 PAPER 2 ONLINE
1 Qs
JEE ADVANCED 2020 PAPER 1 OFFLINE
1 Qs
JEE ADVANCED 2020 PAPER 2 OFFLINE
1 Qs
JEE ADVANCED 2019 PAPER 1 OFFLINE
2 Qs
JEE ADVANCED 2019 PAPER 2 OFFLINE
1 Qs
JEE ADVANCED 2018 PAPER 2 OFFLINE
2 Qs
JEE ADVANCED 2017 PAPER 2 OFFLINE
1 Qs
JEE ADVANCED 2016 PAPER 1 OFFLINE
2 Qs
JEE ADVANCED 2015 PAPER 2 OFFLINE
2 Qs
JEE ADVANCED 2015 PAPER 1 OFFLINE
1 Qs
JEE ADVANCED 2014 PAPER 2 OFFLINE
3 Qs
JEE ADVANCED 2013 PAPER 1 OFFLINE
1 Qs
JEE ADVANCED 2013 PAPER 2 OFFLINE
1 Qs
IIT JEE 2012 PAPER 1 OFFLINE
2 Qs
IIT JEE 2011 PAPER 1 OFFLINE
1 Qs
IIT JEE 2011 PAPER 2 OFFLINE
1 Qs
IIT JEE 2010 PAPER 1 OFFLINE
3 Qs
IIT JEE 2009 PAPER 2 OFFLINE
2 Qs
IIT JEE 2008 PAPER 1 OFFLINE
1 Qs
IIT JEE 2007 PAPER 2 OFFLINE
1 Qs
IIT JEE 2006
4 Qs
IIT JEE 2005 MAINS
2 Qs
IIT JEE 2005
1 Qs
IIT JEE 2004
1 Qs
IIT JEE 2001
2 Qs
IIT JEE 2000
1 Qs
IIT JEE 1999
1 Qs
IIT JEE 1998
1 Qs
IIT JEE 1996
1 Qs
IIT JEE 1995
1 Qs
IIT JEE 1993
1 Qs
IIT JEE 1991
1 Qs

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
JEE Advanced 2026 Paper 1 Online20261View paper
JEE Advanced 2026 Paper 1 Online20261View paper
JEE Advanced 2026 Paper 1 Online20261View paper
JEE Advanced 2026 Paper 2 Online20261View paper
JEE ADVANCED 2025 PAPER 2 ONLINE20251View paper
JEE ADVANCED 2024 PAPER 1 ONLINE20241View paper
JEE ADVANCED 2024 PAPER 2 ONLINE20241View paper
JEE ADVANCED 2022 PAPER 1 ONLINE20221View paper
JEE ADVANCED 2021 PAPER 2 ONLINE20211View paper
JEE ADVANCED 2020 PAPER 1 OFFLINE20201View paper
JEE ADVANCED 2020 PAPER 2 OFFLINE20201View paper
JEE ADVANCED 2019 PAPER 1 OFFLINE20192View paper
JEE ADVANCED 2019 PAPER 2 OFFLINE20191View paper
JEE ADVANCED 2018 PAPER 2 OFFLINE20182View paper
JEE ADVANCED 2017 PAPER 2 OFFLINE20171View paper
JEE ADVANCED 2016 PAPER 1 OFFLINE20162View paper
JEE ADVANCED 2015 PAPER 1 OFFLINE20151View paper
JEE ADVANCED 2015 PAPER 2 OFFLINE20152View paper
JEE ADVANCED 2014 PAPER 2 OFFLINE20143View paper
JEE ADVANCED 2013 PAPER 1 OFFLINE20131View paper
JEE ADVANCED 2013 PAPER 2 OFFLINE20131View paper
IIT JEE 2012 PAPER 1 OFFLINE20122View paper
IIT JEE 2011 PAPER 1 OFFLINE20111View paper
IIT JEE 2011 PAPER 2 OFFLINE20111View paper
IIT JEE 2010 PAPER 1 OFFLINE20103View paper
IIT JEE 2009 PAPER 2 OFFLINE20092View paper
IIT JEE 2008 PAPER 1 OFFLINE20081View paper
IIT JEE 2007 PAPER 2 OFFLINE20071View paper
IIT JEE 200620064View paper
IIT JEE 200520051View paper
IIT JEE 2005 MAINS20052View paper
IIT JEE 200420041View paper
IIT JEE 200120012View paper
IIT JEE 200020001View paper
IIT JEE 199919991View paper
IIT JEE 199819981View paper
IIT JEE 199619961View paper
IIT JEE 199519951View paper
IIT JEE 199319931View paper
IIT JEE 199119911View paper

All Chemical Kinetics And Nuclear Chemistry previous year questions

Practice every matching question in batches of 20, with every available option.

1
1991 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 1991
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 decomposition in a closed vessel, the total pressure developed is found to be 284.5 mm of Hg and on complete decomposition, the total pressure is 584.5 mm of Hg. Calculate the rate constant of the reaction.
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2
1993 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 1993
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% decomposition tooks place. What will be the percentage decomposition in the same time in a 30% solution maintained at 40oC? Assume that activation energy remains constant in this range of temperature.
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3
1995 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 1995
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.
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4
1996 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 1996
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 NH3 and H2O at 25oC is 3.4 \(\times\) 1010 L mol-1s-1. Calculate the rate constant for proton transfer from water to NH3.
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5
1998 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 1998
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.
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6
1999 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 1999
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 rate of the reaction after 1 h.
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7
2000 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 2000
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 required is 400 K. Calculate the activation energy of the reaction if the catalyst lowers the activation barrier by 20 kJ mol-1.
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8
2001 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 2001
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 of the reaction.
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9
2001 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 2001
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 of (B). However, as soon as (B) is added, (A) starts polymerizing into a completely insoluble solid. The polymerization follows first-order kinetics. After 100 minutes, 0.525 mole of a solute is dissolved which arrests the polymerization completely. The final vapour pressure of the solution is 400 mm of Hg. Estimate the rate of constant of the polymerization reaction. Assume negligible volume change on mixing and polymerization and ideal behaviour for the final solution.
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10
2004 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 2004
For the given reactions, A + B \(\to\) Products, following data were obtained
[Ao] [Bo] Ro (mol L-1 s-1)
1 0.1 0.1 0.05
2 0.2 0.1 0.10
3 0.1 0.2 0.05
(a) Write the rate law expression
(b) Find the rate constant
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11
2005 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 2005
At constant temperature and volume, X decomposes as 2X(g) \(\to\) 3Y(g) + 2Z(g); Px is the partial pressure of X.
Observation No. Time (in minute) Px (in mm of Hg)
1 0 800
2 100 400
3 200 200

(i) What is the order of the reaction to X?
(ii) Find the rate constant
(iii) Find the time for 75% completion of the reaction.
(iv) Find the total pressure when pressure of X is 700 mm of Hg
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12
2005 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 2005 MAINS

Fill in the blanks:

(A) \(_{92}^{235}\)U + \(_{0}^{1}\)n \(\to\) \(_{52}^{137}\)A + \(_{40}^{97}\)B + ____________.

(B) \(_{34}^{82}\)Se \(\to\) 2 \({}_{ - 1}{e^0}\) + __________.

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13
2005 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 2005 MAINS

For the following reaction

2X(g) \(\to\) 3Y(g) + 2Z(g)

assuming ideal gas conditions, the data for change of partial pressure with time is as follows:

$$\begin{array}{llll} \[\hline \text { Time (in min) } & 0 & 100 & 200 \\\] \[\hline \begin{array}{l}\] \[\text { Partial pressure of X } \\\] \[\text { (in mm of Hg) }\] \end{array} & 800 & 400 & 200 \end{array}$$

Calculate

(A) Order of reaction.

(B) Rate constant.

(C) Time taken for 75% completion of reaction.

(D) Total pressure of the reaction mixture when \(p_x=700\) mm.

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14
2006 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 2006

What should be the age of fossil for meaningful determination of its age?

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15
2006 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 2006

Which of the following option is correct?

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16
2006 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 2006

A nuclear explosion has taken place leading to increase in concentration of ${ }^{14} \mathrm{C}$ in nearby areas. ${ }^{14} \mathrm{C}$ concentration is $\mathrm{C}_1$ in nearby areas and $C_2$ in areas far away. If the age of the fossil is determined to be $T_1$ and $T_2$ at the places respectively then,

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17
2006 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 2006

$$\text { Match Column I with Column II : }$$

Column I Column II
(A) $\mathrm{CH}_3-\mathrm{CHBr}-\mathrm{CD}_3$ on treatment with alc. KOH gives $\mathrm{CH}_2=\mathrm{CH}-\mathrm{CD}_3$ as a major product. (P) E1 reaction
(B) $$
\[\begin{aligned}\]
&\mathrm{Ph}-\mathrm{CHBr}-\mathrm{CH}_3\\
&\text { reacts faster than }\\
&\mathrm{Ph}-\mathrm{CHBr}-\mathrm{CD}_3 .
\end{aligned}
$$		 (Q) E2 reaction
(C) $$
\mathrm{Ph}-\mathrm{CH}_2-\mathrm{CH}_2 \mathrm{Br}
$$

on treatment with

$$
\mathrm{C}_2 \mathrm{H}_5 \mathrm{OD} / \mathrm{C}_2 \mathrm{H}_5 \mathrm{O}^{-}
$$

gives $\mathrm{Ph}-\mathrm{CD}=\mathrm{CH}_2$
as the major product.		 (R) E1 cb reaction
(D) $\mathrm{PhCH}_2, \mathrm{CH}_2 \mathrm{Br}$ and $\mathrm{PhCD}_2 \mathrm{CH}_2 \mathrm{Br}$ react with same rate. (S) First order reaction
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18
2007 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 2007 PAPER 2 OFFLINE
Consider a reaction aG + bH \(\to\) Products. When concentration of both the reactants G and H is doubled, the rate increases by eight times. However, when concentration of G is doubled keeping the concentration of H fixed, the rate is doubled. The overall order of the reaction is
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19
2008 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 2008 PAPER 1 OFFLINE

Under the same reaction conditions, initial concentration of 1.386 mol dm\(^{-3}\) of a substance becomes half in 40 seconds and 20 seconds through first order and zero order kinetics, respectively. Ratio \(\left( {{{{k_1}} \over {{k_0}}}} \right)\) of the rate constants for first order (\(k_1\)) and zero order (\(k_0\)) of the reactions is:

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20
2009 · Chemistry · Physical Chemistry · Chemical Kinetics And Nuclear Chemistry
IIT JEE 2009 PAPER 2 OFFLINE

The total number of \(\alpha\) and \(\beta\) particles emitted in the nuclear reaction \(_{92}^{238}U \to _{82}^{214}Pb\) is _________.

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