1
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

The rate of a reaction quadruples when temperature changes from $$27^{\circ} \mathrm{C}$$ to $$57^{\circ} \mathrm{C}$$. Calculate the energy of activation.

Given $$\mathrm{R}=8.314 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}, \log 4=0.6021$$

A
$$38.04 \mathrm{~kJ} / \mathrm{mol}$$
B
$$380.4 \mathrm{~kJ} / \mathrm{mol}$$
C
$$3.80 \mathrm{~kJ} / \mathrm{mol}$$
D
$$3804 \mathrm{~kJ} / \mathrm{mol}$$
2
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

For a reaction $$3 \mathrm{~A} \rightarrow 2 \mathrm{~B}$$

The average rate of appearance of $$\mathrm{B}$$ is given by $$\frac{\Delta[B]}{\Delta t}$$. The correct relation between the average rate of appearance of $$\mathrm{B}$$ with the average rate of disappearance of A is given in option :

A
$$\frac{-\Delta[\mathrm{A}]}{\Delta \mathrm{t}}$$
B
$$\frac{-3 \Delta[\mathrm{A}]}{2 \Delta t}$$
C
$$\frac{-2 \Delta[\mathrm{A}]}{3 \Delta \mathrm{t}}$$
D
$$\frac{\Delta[\mathrm{A}]}{\Delta t}$$
3
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct options for the rate law that corresponds to overall first order reaction is

A
Rate $$=\mathrm{k}[\mathrm{A}]^0[\mathrm{~B}]^2$$
B
Rate $$=\mathrm{k}[\mathrm{A}][\mathrm{B}]$$
C
Rate $$=\mathrm{k}[\mathrm{A}]^{1 / 2}[\mathrm{~B}]^2$$
D
Rate $$=\mathrm{k}[\mathrm{A}]^{-1 / 2}[\mathrm{~B}]^{3 / 2}$$
4
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

For a certain reaction, the rate $$=\mathrm{k}[\mathrm{A}]^{2}[\mathrm{~B}]$$, when the initial concentration of A is tripled keeping concentration of $$\mathrm{B}$$ constant, the initial rate would

A
increase by a factor of six
B
increase by a factor of nine
C
increase by a factor of three
D
decrease by a factor of nine
NEET Subjects
EXAM MAP