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
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12