Organic Chemistry
Some Basic Concepts of Organic Chemistry
MCQ (Single Correct Answer)MCQ (Multiple Correct Answer)
Alcohol, Phenols and Ethers
MCQ (Single Correct Answer)
Aldehydes, Ketones and Carboxylic Acids
MCQ (Single Correct Answer)MCQ (Multiple Correct Answer)
Organic Compounds Containing Nitrogen
MCQ (Single Correct Answer)
Chemistry in Everyday Life
MCQ (Single Correct Answer)
1
NEET 2024
MCQ (Single Correct Answer)
+4
-1

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

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

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

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
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