Test: Rate of reactions - JEE MCQ
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15 Questions MCQ Test - Test: Rate of reactions
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Test: Rate of reactions - Question 1
The reaction rate is defined as the rate at which the concentration of the reactants __________ with time or the concentration of products ___________ with time.
Detailed Solution for Test: Rate of reactions - Question 1
Test: Rate of reactions - Question 2
Consider the following reaction
A⟶ Products
This reaction is completed in 100 min. The rate constant of this reaction at t1 = 10 min, is 10−2 min−1. What is the rate constant (in min−1) at t2 = 20 min?
A⟶ Products
This reaction is completed in 100 min. The rate constant of this reaction at t1 = 10 min, is 10−2 min−1. What is the rate constant (in min−1) at t2 = 20 min?
Detailed Solution for Test: Rate of reactions - Question 2
also 
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Test: Rate of reactions - Question 3
Which of the following terms would not be determined experimentally?
Detailed Solution for Test: Rate of reactions - Question 3
Test: Rate of reactions - Question 4
Consider the reaction
The equality relationship between
and 
is
The equality relationship between
and is
Detailed Solution for Test: Rate of reactions - Question 4
and 
, then
Test: Rate of reactions - Question 5
A following mechanism has been proposed for reaction 2 A + B → D + E
A + B → C + D(slow)
A + C → E (fast)
The rate law expression for the reaction is:
Detailed Solution for Test: Rate of reactions - Question 5
Test: Rate of reactions - Question 6
The rate law for the reaction 
is Rate 
The correct statement with regard to this relation is
Detailed Solution for Test: Rate of reactions - Question 6
is half of the rate of disappearance of 
.
Test: Rate of reactions - Question 7
In a reaction, 
products, the concentration of 
decreases from 
to 
in 
. What is the rate of disappearance of A (in 
) during this interval?
Detailed Solution for Test: Rate of reactions - Question 7
.
Hence X
Detailed Solution for Test: Rate of reactions - Question 8
Detailed Solution for Test: Rate of reactions - Question 9
Test: Rate of reactions - Question 10
The inversion of cane sugar proceeds with half-life of 500 minute at 
for any concentration of sugar. However if 
, the half-life changes to 50 minute. The rate law expression for the sugar inversion can be written as
for any concentration of sugar. However if , the half-life changes to 50 minute. The rate law expression for the sugar inversion can be written as
Detailed Solution for Test: Rate of reactions - Question 10
, the half-life is independent of the concentration of sugar. Hence, the reaction is of first order in sugar.
sugar 
.
is 
.
Test: Rate of reactions - Question 11
Reaction rates are determined by all of the following factors except:
Detailed Solution for Test: Rate of reactions - Question 11
Test: Rate of reactions - Question 12
For a reaction 
, rate of disappearance of ' 
is related to the rate of appearance of 'B' by the expression
, rate of disappearance of ' is related to the rate of appearance of 'B' by the expression
Detailed Solution for Test: Rate of reactions - Question 12
or 
Test: Rate of reactions - Question 13
The terms rate of reaction and rate of appearance (or disappearance) of reactant (or product)
Detailed Solution for Test: Rate of reactions - Question 13
Test: Rate of reactions - Question 14
For the reaction 
in alkaline aqueous solution, the value of the second order (in 
) rate constant at 
in the rate law 
was found to be
. Rate constant when the rate law is written for 
is
Detailed Solution for Test: Rate of reactions - Question 14
Test: Rate of reactions - Question 15
A G.M. counter is used to study the radioactive process of first-order. In the absence of radioactive substance 
, it counts 3 disintegration per second (dps). When 
is placed in the G.M. counter, it records 23 dps at the start and 13 dps after 10 minutes. It records 
dps after next 10 minutes and 
has half-life period y minutes. 
and 
are
Detailed Solution for Test: Rate of reactions - Question 15
minutes
dps
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