1
JEE Main 2019 (Online) 11th January Morning Slot
+4
-1
If a reaction follows the Arrhenius equation, the plot ln k vs $${1 \over {\left( {RT} \right)}}$$ gives straight line with a gradient ($$-$$ y) unit.

The energy required to active the reactant is :
A
y unit
B
y/R unit
C
yR unit
D
$$-$$y unit
2
JEE Main 2019 (Online) 10th January Evening Slot
+4
-1
For an elementary chemical reaction,

the expression for $${{d\left[ A \right]} \over {dt}}$$ is
A
2K1[A2] – K –1 [A]2
B
K1[A2] – K –1 [A]2
C
K1[A2] + K –1 [A]2
D
2K1[A2] – 2K –1 [A]2
3
JEE Main 2019 (Online) 10th January Morning Slot
+4
-1
Which of the graphs shown below does not represent the relationship between incident light and the electron ejected from metal surface ?
A
B
C
D
4
JEE Main 2019 (Online) 10th January Morning Slot
+4
-1
Consider the given plots for a reaction obeying Arrhenius equation (0oC < T < 300oC) : (K and Ea are rate constant and activation energy, respectively)

Choose the correct option :
A
I is right but II is wrong
B
Both I and II are correct
C
Both I and II are wrong
D
I is wrong but II is right
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