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JEE Main

IMPORTANT

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Consider the given plots for a reaction obeying Arrhenius equation $(0 ° C < T < 300 ° C) :$ ( $K$ and $E_{a}$ are rate constant and activation energy, respectively )

(I)

(II)

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Important Questions on Chemical Kinetics

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Main - 10th April 2019 Shift 2>Q 70

For the reaction of

H_{2}

with

I_{2}

, the rate constant is

2.5 \times 10^{- 4} d m^{3} m o l^{- 1} s^{- 1}

327^{o} C

and

1.0 d m^{3} m o l - 1 s^{- 1}

527 ° C

. The activation energy for the reaction, in

k J m o l - 1

is:

(R = 8.314 J K^{- 1} m o l^{- 1})

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Main - 10th April 2019 Shift 1>Q 71

A bacterial infection in an internal wound grows as

N^{'} (t) = N_{0} e x p (t)

, where the time

t

is in hours. A dose of antibiotic, taken orally, needs 1 hour to reach the wound. Once it reaches there, the bacterial population goes down as

\frac{d N}{d t} = - 5 N^{2}

. What will be the plot of

\frac{N_{0}}{N}

t

after

1

hour?

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Main - 10th April 2016>Q 72

The rate law for the reaction below is given by the expression

k [A] [B]

A + B \to P r o d u c t

If the concentration of

B

is increased from

0.1 to 0.3 mol

, keeping the value of

A

0.1 mol

, the rate constant will be:

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Main - 10th April 2015>Q 73

The reaction

2 N_{2} O_{5} (g) \to 4 N O_{2} (g) + O_{2} (g)

follows first order kinetics. The pressure of a vessel containing only

N_{2} O_{5}

was found to increase from 50 mm Hg to 87.5 mm Hg in 30 min. The pressure exerted by the gases after 60 min. Will be (Assume temperature remains constant) :

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Main - 1 September 2021 Shift 2>Q 74

Which one of the following given graphs represents the variation of rate constant

(k)

with temperature

(T)

for an endothermic reaction?

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Main - 24 June 2022 Shift 1>Q 75

The rate constants for decomposition of acetaldehyde have been measured over the temperature range $700 - 1000 K$ . The data has been analysed by plotting $lnk$ vs $\frac{10^{3}}{T}$ graph. The value of activation energy for the reaction is ${kJmol}^{- 1}$ . (Nearest integer) (Given : $R = 8.31 J K^{- 1} {mol}^{- 1}$ )

Question Image

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Main - 24 June 2022 Shift 2>Q 76

For a first order reaction, the time required for completion of $90 %$ reaction is ' $x$ ' times the half life of the reaction. The value of ' $x$ ' is

(Given: $\ln 10 = 2.303$ and $\log 2 = 0.3010$ )

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 10 - Chemical Kinetics>JEE Main - 25 June 2022 Shift 1>Q 77

For a given chemical reaction

γ_{1} A + γ_{2} B \to γ_{3} C + γ_{4} D

. Concentration of

C

changes from

10 mmol {dm}^{- 3}

20 mmol {dm}^{- 3}

10 s .

Rate of appearance of

D

1.5

times the rate of disappearance of

B

which is twice the rate of disappearance

A

. The rate of appearance of

D

has been experimentally determined to be

9 mmol {dm}^{- 3} s^{- 1} .

Therefore the rate of reaction is____

mmol {dm}^{- 3} s^{- 1} .

(Nearest Integer)

Consider the given plots for a reaction obeying Arrhenius equation (0°C<T<300°C): ( K and Ea are rate constant and activation energy, respectively ) (I) (II)

Important Questions on Chemical Kinetics

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Consider the given plots for a reaction obeying Arrhenius equation $(0 ° C < T < 300 ° C) :$ ( $K$ and $E_{a}$ are rate constant and activation energy, respectively )

(I)

(II)