For the reaction, 2A → B, rates= k[A]2. If the concentration of reactant is doubled, then the:

(a) rate of reaction will be doubled.
(b) rate constant will remain unchanged, however rate of reaction is directly proportional to the rate constant.
(c) rate constant will change since the rate of reaction and rate constant are directly proportional to each other.
(d) rate of reaction will increase by four times.

Identify the set of correct statements & choose the correct answer from the options given below:

1. (a) and (c) only 2. (a) and (b) only
3. (b) and (d) only 4. (c) and (d) only
Subtopic:  Definition, Rate Constant, Rate Law |
 70%
Level 2: 60%+
NEET - 2022
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At high pressure, the following reaction is zero order:

The correct statements among the following is:

(a) Rate of reaction = Rate constant
(b) Rate of the reaction depends on the concentration of ammonia
(c) Rate of decomposition of ammonia will remain constant until ammonia disappears completely
(d) Further increase in pressure will change the rate of reaction
 
1. a, b, and c 2. b, c, and d
3. a, c, and d 4. a, b, and d
Subtopic:  Definition, Rate Constant, Rate Law |
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Level 2: 60%+
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A graph of volume of hydrogen released vs time for the reaction between zinc and dil. HCl is given in the graph below.
                         
The correct statement among the following based on the graph given above is:

1.Averagerateupto40s is V3V2402.Averagerateupto40s is V3V240303.Averagerateupto40s is V3404.Averagerateupto40s is V3V14020

Subtopic:  Definition, Rate Constant, Rate Law |
Level 3: 35%-60%
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Consider the reaction AB. The concentration of both the reactant and the product varies exponentially with time.

The graph that accurately depicts how reactant and product concentrations change with time is:

1.  2.
3. 4.
Subtopic:  Definition, Rate Constant, Rate Law |
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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
Subtopic:  Definition, Rate Constant, Rate Law |
 74%
Level 2: 60%+
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Based on the graph below, the average rate of reaction will be:
1. \(\frac{[R_{2}]-[R_{1}]}{t_{2}-t_{1}}\) 2. \(-(\frac{[R_{2}]-[R_{1}]}{t_{2}-t_{1}})\)
3. \(\frac{[R_{2}]}{t_{2}}\) 4. \(-(\frac{[R_{1}]-[R_{2}]}{t_{2}-t_{1}})\)
Subtopic:  Definition, Rate Constant, Rate Law |
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Level 2: 60%+
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Consider the following graph:
      

The instantaneous rate of reaction at t = 600 sec will be:

1. - 4.75 ×10-4 mol L-1s-1
2. 5.75×10-5 mol L-1s-1
3.  6.75×10-6 mol L-1s-1
4. -6.75×10-6 mol L-1s-1

Subtopic:  Definition, Rate Constant, Rate Law |
 54%
Level 3: 35%-60%
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A

B

A.

i. Variation in concentration of a product with time.

B. 

ii. Reaction at equilibrium

C.

iii. Variation in concentration of a reactant with time.

Match the graphical variations with their descriptions given above and identify the correct codes below:

A B C
1. i iii ii
2. i ii iii
3. iii ii i
4. iii i ii
Subtopic:  Definition, Rate Constant, Rate Law |
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Level 2: 60%+
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