1
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Change Language

For the reaction $\mathrm{A}(\mathrm{g}) \rightleftharpoons 2 \mathrm{~B}(\mathrm{~g})$, the backward reaction rate constant is higher than the forward reaction rate constant by a factor of 2500 , at 1000 K.

[Given : $\mathrm{R}=0.0831 \mathrm{~L} \mathrm{~atm} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}$ ]

$K_p$ for the reaction at $1000 K$ is

A
0.033
B
0.021
C
83.1
D
$2.077 \times 10^5$
2
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Change Language

Higher yield of NO in $\mathrm{N}_2(\mathrm{~g})+\mathrm{O}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NO}(\mathrm{g})$ can be obtained at $\left[\Delta \mathrm{H}\right.$ of the reaction $\left.=+180.7 \mathrm{~kJ} \mathrm{~mol}^{-1}\right]$

A. Higher temperature

B. Lower temperature

C. Higher concentration of $\mathrm{N}_2$

D. Higher concentration of $\mathrm{O}_2$

Choose the correct answer from the options given below :

A
B, C, D only
B
A, C, D only
C
A, D only
D
B, C only
3
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1
Change Language

At a given temperature and pressure, the equilibrium constant values for the equilibria are given below:

$$\begin{aligned} & 3 \mathrm{~A}_2+\mathrm{B}_2 \rightleftharpoons 2 \mathrm{~A}_3 \mathrm{~B}, \mathrm{~K}_1 \\ & \mathrm{~A}_3 \mathrm{~B} \rightleftharpoons \frac{3}{2} \mathrm{~A}_2+\frac{1}{2} \mathrm{~B}_2, \mathrm{~K}_2 \end{aligned}$$

The relation between $$\mathrm{K}_1$$ and $$\mathrm{K}_2$$ is :

A
$$\mathrm{K}_1^2=2 \mathrm{~K}_2$$
B
$$\mathrm{K}_2=\frac{\mathrm{K}_1}{2}$$
C
$$\mathrm{K}_1=\frac{1}{\sqrt{\mathrm{K}_2}}$$
D
$$\mathrm{K}_2=\frac{1}{\sqrt{\mathrm{K}_1}}$$
4
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1
Change Language

For the reaction in equilibrium

$$\mathrm{N}_2(\mathrm{~g})+3 \mathrm{H}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NH}_3(\mathrm{~g}), \Delta \mathrm{H}=-\mathrm{Q}$$

Reaction is favoured in forward direction by:

A
use of catalyst
B
decreasing concentration of $$\mathrm{N}_2$$
C
low pressure, high temperature and high concentration of ammonia
D
high pressure, low temperature and higher concentration of $$\mathrm{H}_2$$
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