Explore topic-wise MCQs in Chemistry.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.

1.

WHat is the expression of KC of the chemical equation Ag2O(s) + 2HNO3(aq) ( rightleftharpoons ) 2AgNO3(aq) +H2O(l)?

A. [AgNO<sub>3(aq)</sub>]<sup>2</sup>/[HNO<sub>3(aq)</sub>]<sup>2</sup>
B. [AgNO<sub>3(aq)</sub>]/[HNO<sub>3(aq)</sub>]<sup>2</sup>
C. [AgNO<sub>3(aq)</sub>]<sup>2</sup>/[HNO<sub>3(aq)</sub>]
D. [AgNO<sub>(aq)</sub>]<sup>2</sup>/[HNO<sub>3(aq)</sub>]<sup>2</sup>
Answer» B. [AgNO<sub>3(aq)</sub>]/[HNO<sub>3(aq)</sub>]<sup>2</sup>
Discussion
2.

CO2(g) + C(s) ( rightleftharpoons ) 2CO(g) is an example of _____________

A. homogeneous equilibrium
B. heterogeneous equilibrium
C. neither homogeneous nor heterogeneous
D. both homogeneous and heterogeneous
Answer» C. neither homogeneous nor heterogeneous
Discussion
3.

If KC of a reaction N2(g) + O2(g) ( rightleftharpoons ) 2NO(g) is 2 x 10-3, then what is the KP?

A. 4 x 10<sup>-3</sup>
B. 1 x 10<sup>-3</sup>
C. 3 x 10<sup>-3</sup>
D. 2 x 10<sup>-3</sup>
Answer» E.
Discussion
4.

What is the relation between KP and KC?

A. K<sub>C</sub> = K<sub>P</sub>
B. K<sub>C</sub> = K<sub>P</sub>(RT)
C. K<sub>C</sub> = K<sub>P</sub>(RT)<sup> ng</sup>
D. K<sub>P</sub> = K<sub>C</sub>(RT)<sup> ng</sup>
Answer» D. K<sub>P</sub> = K<sub>C</sub>(RT)<sup> ng</sup>
Discussion
5.

For the following equation, 2HBr(g) ( rightleftharpoons ) H2(g) + Br2(g); are both KP and KC are equal?

A. yes
B. cannot say
C. no
D. depends on the temperature
Answer» B. cannot say
Discussion
6.

At constant temperature, the pressure is directly proportional to the concentration of the gas.

A. true
B. false
Answer» B. false
Discussion
7.

Write pressure in terms of concentration and temperature.

A. P = CRT
B. P = nrt
C. p = CT
D. C = PT
Answer» B. P = nrt
Discussion
8.

Br2(l) ( rightleftharpoons ) Br2(g) is in ________

A. homogeneous equilibrium
B. not in both Homogeneous and heterogeneous equilibrium
C. cannot say
D. may or may not be in Homogeneous equilibrium
Answer» C. cannot say
Discussion
9.

The units of KP and KC are equal.

A. true
B. false
Answer» C.
Discussion
10.

The equilibrium N2(g) + O2(g) ( rightleftharpoons ) 2NO(g), is an example of _____________

A. homogeneous chemical equilibrium
B. heterogeneous chemical equilibrium
C. neither homogeneous nor heterogeneous
D. both homogeneous and heterogeneous
Answer» B. heterogeneous chemical equilibrium
Discussion