The correct statements among following about Maxwell, Boltzmann distribution of energy is -
a. | The fraction of molecules with the most probable kinetic energy decreases at higher temperatures |
b. | The fraction of molecules with the most probable kinetic energy increases at higher temperatures |
c. | Most probable kinetic energy increases at higher temperatures |
d. | Most probable kinetic energy decreases at higher temperatures |
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)
The correct statements among the following regarding Maxwell, Boltzmann distribution curve of energy is -
a. | The area under the curve must not change with an increase in temperature. |
b. | The area under the curve increases with increase in temperature. |
c. | Area under the curve decreases with increase in temperature. |
d. | With an increase in temperature curve broadens and shifts to the right-hand side. |
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
The correct statements among the following regarding the Arrhenius equation is/are -
a. | Rate of a reaction increases with an increase in temperature |
b. | Rate of a reaction increases with a decrease in activation energy |
c. | Rate constant decreases exponentially with an increase in temperature |
d. | Rate of reaction decreases with a decrease in activation energy |
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
The correct statements among the following is:
a. | Catalyst provides an alternative pathway to the reaction mechanism |
b. | Catalyst raises the activation energy |
c. | A catalyst lowers the activation energy |
d. | Catalyst alters enthalpy change of the reaction |
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)
The graphs that represent a zero-order reaction are:
1. | 2. | ||
3. | 4. |
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
The correct graphical representation of first-order reaction is:
(a) | (b) | ||
(c) | (d) |
1. | (a) and (b) | 2. | (b) and (c) |
3. | (c) and (d) | 4. | (a) and (d) |
Match the graph given in Column I with the order of reaction given in Column II.
More than one item in Column I may be linked to the same item in Column II:
Column I | Column II | ||
(a) | (a) | 1st order | |
(b) | (b) | Zero order | |
(c) | |||
(d) |
(i) | (ii) | (iii) | (iv) | |
1. | (a) | (b) | (a) | (b) |
2. | (a) | (b) | (b) | (a) |
3. | (a) | (a) | (b) | (b) |
4. | (b) | (b) | (a) | (a) |
Column I | Column II | ||
A. | Catalyst alters the rate of reaction | 1. | Proper orientation is not there always |
B. | 2. | By lowering the activation energy | |
C. | Energetically favorable reactions are sometimes slow | 3. | Total probability is one |
D. | Area under the Maxwell-Boltzmann curve is constant | 4. | Refers to the fraction of molecules with energy equal to or greater than the activation energy |
Codes
A | B | C | D | |
1. | 2 | 4 | 1 | 3 |
2. | 3 | 1 | 4 | 2 |
3. | 1 | 4 | 3 | 2 |
4. | 3 | 4 | 1 | 2 |
Match the items in Column I with Column II:
Column I | Column II |
A. Diamond to graphite conversion | 1. Short interval of time |
B. Instantaneous rate | 2. Ordinarily rate of conversion is imperceptible |
C. Average rate | 3. Long duration of time |
Codes
A | B | C | |
1. | 2 | 1 | 3 |
2. | 1 | 2 | 3 |
3. | 3 | 2 | 1 |
4. | 1 | 3 | 2 |
Match the items in Column I and Column II:
Column I | Column II |
A. Mathematical expression for the rate of reaction | 1. Rate constant |
B. Rate of reaction for zero-order reaction is equal to | 2. Rate law |
C. Units of rate constant for zero-order reaction is same as that of | 3. Order of slowest step |
D. Order of a complex reaction is determined by | 4. Rate of reaction |
Codes
A | B | C | D | |
1. | 3 | 4 | 1 | 2 |
2. | 1 | 2 | 3 | 4 |
3. | 2 | 1 | 4 | 3 |
4. | 4 | 1 | 3 | 2 |