The rate Constant of reaction A $\to$ B is 0.6 × 10–3 mole per second. If the Concentration of A is 5, then the concentration of B after 20 min is:

1. 1.08M

2. 3.60M

3. 0.36M

4. 0.72M

Subtopic:  Order, Molecularity and Mechanism |
53%
From NCERT
NEET - 2015
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The activation energy of a reaction can be determined from the slope of which of the following graphs?
1. ln K vs T
2. ln $\frac{\mathrm{K}}{\mathrm{T}}$vs T
3. ln K vs $\frac{\mathrm{I}}{\mathrm{T}}$
4. ln

Subtopic:  Arrhenius Equation |
90%
From NCERT
NEET - 2015
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

When the initial concentration of a reactant is doubled in a reaction, its half-life period is not affected. The order of the reaction will be:
1. 0
2. 1
3. 1.5
4. 2

Subtopic:  Order, Molecularity and Mechanism |
83%
From NCERT
NEET - 2015
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

What is the activation energy for a reaction if its rate doubles when the temperature is raised from 20oC to 35oC?
(R = 8.314 J mol–1 K–1)
1. 269 kJ mol–1
2. 34.7 kJ mol–1
3. 15.1 kJ mol–1
4. 342 kJ mol–1
Subtopic:  Arrhenius Equation |
66%
From NCERT
AIPMT - 2013
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

A reaction having equal energies of activation for forward and reverse reaction has:

1. ΔG = 0

2. ΔH = 0

3. ΔH = ΔG = ΔS = 0

4. ΔS = 0

Subtopic:  Arrhenius Equation |
72%
From NCERT
AIPMT - 2013
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

For a reaction between A and B the order with respect to A is 2 and the order with respect to B is 3. The concentration of both A and B is doubled the rate will increase by a factor of:
 1 12 2 16 3 32 4 10
Subtopic:  Order, Molecularity and Mechanism |
83%
From NCERT
NEET - 2013
Hints

A reaction is 50% complete in 2 hours and 75% complete in 4 hours. The order of the reaction is:
 1 1 2 2 3 3 4 0
Subtopic:  Order, Molecularity and Mechanism |
80%
From NCERT
NEET - 2013
Hints

In a reaction, A + B → Product, the rate is doubled when the concentration of B is doubled, and the rate increases by a factor of 8, when the concentrations of both the reactants (A and B) are doubled. The rate law for the reaction can be written as:

1. Rate = k[A][B]2

2. Rate = k[A]2[B]2

3. Rate = k[A][B]

4. Rate = k[A]2[B]

Subtopic:  Definition, Rate Constant, Rate Law |
75%
From NCERT
AIPMT - 2012
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

In a zero-order reaction for every 10 °C 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:

1. 256 times

2. 512 times

3. 64 times

4. 128 times

Subtopic:  First Order Reaction Kinetics |
84%
From NCERT
AIPMT - 2012
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Activation energy ${E}_{a}$ and rate constant (k1 and k2) of a chemical reaction at two different temperatures (T1 and T2) are related by:

 1 $$\ln \frac{k_2}{k_1}=-\frac{E_a}{R}\left(\frac{1}{T_2}-\frac{1}{T_1}\right)$$ 2 $$\ln \frac{k_2}{k_1}=-\frac{E_a}{R}\left(\frac{1}{T_2}+\frac{1}{T_1}\right)$$ 3 $$\ln \frac{k_2}{k_1}=\frac{E_a}{R}\left(\frac{1}{T_2}-\frac{1}{T_1}\right)$$ 4 $$\ln \frac{k_2}{k_1}=-\frac{E_a}{R}\left(\frac{1}{T_1}-\frac{1}{T_2}\right)$$
Subtopic:  Arrhenius Equation |
55%
From NCERT
AIPMT - 2012
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch