# Chemical Kinetics MCQ | Questions – Paper 1 2

## Topic: Chemical Kinetics, Test No.: 01, Total MCQs: 15

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 Question 1

In a reaction, A + B Product, rate is doubled when the concentration of B is doubled, and rate increases by a factor of 8 when the concentrations of both the reactants (A and B) are doubled, rate law for the reaction can be written as [CBSE AIPMT 2012]

 A Rate = k[A] [B] B Rate = k[A]2[B] C Rate = k[A][B]2 D Rate = k[A]2[B]2
 Question 2

In a zero-order reaction for every 10° rise of temperature, the rate is doubled. If the temperature is increased from 10°C to 100°C, the rate of the reaction will become [CBSE AIPMT 2012]

 A 64 times B 128 times C 256 times D 512 times
 Question 3

For a first order reaction (A) products the concentration of A changes from 0.1M to 0.025 M in 40minutes.

The rate of reaction when the concentration of A is 0.01 M is: [AIEEE 2012]

 A 1.73 × 10–5 M/min B 3.47 × 10–4 M/min C 3.47 × 10–5 M/min D 1.73 × 10–4 M/min
 Question 4

The activation energy of a reaction at a given temperature is found to be 2.303 RT J mol–1. The ratio of rate constant to the Arrhenius factor is [Karnataka CET 2011]

 A 0.1 B 0.01 C 0.001 D 0.02
 Question 5

The following data were obtained during the first order decomposition of 2A(g) B(g) + C(s) at a constant volume and at a particular temperature.

 Sr. No. Time Total pressure in Pascal 1. At the end of 10 min 300 2. After completion 200

The rate constant in min–1 is [Karnataka CET 2011]

 A 69.3 B 0.0693 C 6.93 × 10–4 D 6.93
 Question 6

The time required for 100% completion of a zero order reaction is  [Karnataka CET 2011]

 A B ak C D Question 7

The rate of a chemical reaction doubles for every 10°C rise of temperature. If the temperature is raised by 50°C, the rate of the reaction increases by about [AIEEE 2011]

 A 64 times B 10 times C 24 times D 32 times
 Question 8

In the hydrolysis of an organic chloride in presence of large excess of water, RCl + H2O ROH + HCl

[West Bengal JEE 2010]

 A Molecularity and order of reaction both are 2 B Molecularity is 2 but order of reaction is 1 C Molecularity is 1 but order of reaction is 2 D Moecularity is 1 and order of reaction is also 1
 Question 9

Radioactivity of a sample (z = 22) decreases 90% after 10 years. What will be the half-life of the sample? [West Bengal JEE 2010]

 A 5 years B 2 years C 3 years D 10 years
 Question 10

The activation energy for a reaction at the temperature T K was found to be 2.303 RT J mol–1. The ratio of the rate constant to Arrhenius factor is ______. [Karnataka CET 2010]

 A 10–1 B 10–2 C 2 × 10–3 D 2 × 10–2
 Question 11

Time required for 100 percent completion of a zero order reaction is [Karnataka CET 2010]

 A 2k/a B a/2k C a/k D ak
 Question 12

The concentration of R in the reaction R P was measured as a function of time and the following data is obtained

 [R] (molar) 1 0.75 0.4 0.1 t (min) 0 0.05 0.12 0.18

The order of the reaction is [IIT JEE 2010]

 A first B second C third D zero
 Question 13

Which of these changes with time for a first-order reaction? [Delhi PMT 2010]

A. Rate of reaction

B. Rate constant

C. Half-life

 A A only B C only C A and B only D B and C only
 Question 14

During the kinetic study of the reaction, 2A + B 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 0.1 0.1 6.0 × 10–3 II 0.3 0.2 7.2 × 10–2 III 0.3 0.4 2.88 × 10–1 IV 0.4 0.1 2.40 × 10–2

Based on the above data which one of the following is correct? [CBSE AIPMT 2010]

 A rate = k[A]2 [B]2 B rate = k[A] [B]2 C rate = k[A]2 [B] D rate = k[A] [B]
 Question 15

For the reaction N2O5(g) 2NO2(g) + O2(g) the value of rate of disappearance of N2O5 is given as 6.25 × 10–3 mol L–1 s–1. The rate of formation of NO2 and O2 is given respectively as: [CBSE AIPMT 2010]

 A 6.25 × 10–3 mol L–1 s–1 and 3.125 × 10–3 mol L–1 s–1 B 6.25 × 10–3 mol L–1 s–1 and 6.25 × 10–3 mol L–1 s–1 C 6.25 × 10–3 mol L–1 s–1 and 6.25 × 10–3 mol L–1 s–1 D 1.25 × 10–2 mol L–1 s–1 and 3.125 × 10–3 mol L–1 s–1
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## 2 thoughts on “Chemical Kinetics MCQ | Questions – Paper 1”

• hafiz muhammed abdul rahman