1
NEET 2021
MCQ (Single Correct Answer)
+4
-1
For a reaction, A $$\to$$ B, enthalpy of reaction is $$-$$4.2 kJ mol$$-$$1 and enthalpy of activation is 9.6 kJ mol$$-$$1. The correct potential energy profile for the reaction is shown in option.
A
NEET 2021 Chemistry - Chemical Kinetics Question 11 English Option 1
B
NEET 2021 Chemistry - Chemical Kinetics Question 11 English Option 2
C
NEET 2021 Chemistry - Chemical Kinetics Question 11 English Option 3
D
NEET 2021 Chemistry - Chemical Kinetics Question 11 English Option 4
2
NEET 2021
MCQ (Single Correct Answer)
+4
-1
The slope of Arrhenius plot $$\left( {\ln \,k\,v/s{1 \over T}} \right)$$ of first order reactino is $$-$$5 $$\times$$ 103K. The value of Ea of the reaction is. Choose the correct option for your answer.

[Given R = 8.314 JK$$-$$1mol$$-$$1]
A
$$-$$83 kJ mol$$-$$1
B
41.5 kJ mol$$-$$1
C
83.0 kJ mol$$-$$1
D
166 kJ mol$$-$$1
3
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
An increase in the concentration of the reactants of a reaction leads to change in :
A
heat of reaction
B
threshold energy
C
collision frequency
D
activation energy
4
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
The rate constant for a first order reaction is 4.606 $$ \times $$ 10-3 s-1. The time required to reduce 2.0 g of the reactant to 0.2 g is :
A
200 s
B
500 s
C
1000 s
D
100 s
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