For a certain reaction a plot of [(c0-c)/c] against time t, yields a straight line. c0 and c are concentrations of reactant at t = 0 and t = t respectively. The order of reaction is:

1. 3

2. 0

3. 1

4. 2

Subtopic:  Order,Molecularity and Mechanism |
To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Hydrogenation of vegetable ghee at 250C reduces pressure of H2 from 2 atom to 1.2 atom in 50 minute. The rate of reaction in terms of molarity per second is:

1. 1.09 x 10-6

2. 1.09 x 10-5

3. 1.09 x 10-7

4. 1.09 x 10-8

 

Subtopic:  First Order Reaction Kinetics |
To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


A hypothetical reaction, A2 +B2  2AB mechanism as given below;

A2 A+ A          ............(Fast)

A+B2 → AB + B   ............(Slow)

A+ → AB         ............(Fast)

The order of the overall reaction is:

1. 2

2. 1

3. 1.5

4. zero

 

Subtopic:  Order,Molecularity and Mechanism |
To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Following mechanism has been proposed for a reaction,

2A+B D+E

A+B C+D    ...(Slow)

A+ C E         ...(Fast)

The rate law expression for the reaction is:

1. r = K[A]2[B]

2. r=K[A][B]

3. r= K[A]2

4. r= K[A][C]

Subtopic:  Definition, Rate Constant, Rate Law |
To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


In gaseous reactions important for the understanding of the upper atmosphere H2O and O react bimolecularly to form two OH radicals. H for this reaction is 72kJ at 500 K and Ea is 77 kJ mol-1, then Ea for the bimolecular recombination of two OH radicals to form H2O and O is:

1. 3 kJ mol-1

2. 4 kJ mol-1

3. 5 kJ mol-1

4. 7 kJ mol-1

Subtopic:  Arrhenius Equation |
To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


For a reaction A           Product, rate law is -d[A]dt=K[A]0. The concentration of A left after time t when t=1K is:

1. [A]0e

2. [A]0 ×e

3. [A]0e2

4. 1[A]0

Subtopic:  First Order Reaction Kinetics |
To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


For an exothermic chemical process occurring in two steps as;

(i) A+BX(Slow)

(ii) XAB (Fast)

The progress of the reaction can be best described by:

1. 

2. 

3. 

4. all of these

Subtopic:  Arrhenius Equation |
To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


For the non-stoichiometric reaction 2A + B  C +D, the following kinetic data were obtained in three separate experiments, all at 298 K.

 Initial 

Concentration (A)

 Initial Concentration (B)  Initial rate of formation of C (mol L-1 S-1)
         0.1 M         0.1 M  1.2×10-3
         0.1 M         0.2 M 1.2×10-3
         0.2 M         0.1 M  2.4×10-3

 

The rate law for the formation of C is:

1. d[C]/dt = k[ A][B]

2. d[C]/dt = k[ A]2[B]

3. d[C]/dt = k[ A][B]2

4. d[C]/dt = k[ A]

Subtopic:  Order,Molecularity and Mechanism |
To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


For the reaction N2 + 3H2  2NH3, the rate d[NH3]/dt = 2x10-4 Ms-1 .Therefore, the rate -d[N2]/dt is given as:

1. 10-4 Ms-1

2. 104 Ms-1

3. 10-2 sM-1

4. 10-4 sM-1

Subtopic:  Definition, Rate Constant, Rate Law |
To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


If 'I' is the intensity of absorbed light and 'c' is the concentration of AB for the photochemical process AB + hv→  AB *, the rate of formation of AB * is directly proportional to:

1. c

2. I

3. I2

4. cI

Subtopic:  Definition, Rate Constant, Rate Law |
To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level: