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Published on: 07/06/2021
QB365 provides detailed and simple solution for every Book back Questions in class 11 Chemistry Subject. It will helps to get more idea about question pattern in every book back questions with solution.
Download Tamil Nadu 11th Standard Chemistry question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Chemistry Test1.
A 20 litre container at 400 K contains CO2 (g) at pressure 0.4 atm and an excess of SrO (neglect the volume of solid SrO). The volume of the container is now decreased by moving the movable piston fitted in the container. The maximum volume of the container, when pressure of CO2 attains its maximum value will be: Given that: SrCO3 (S) ⇌ SrO (S) + CO2(g)
KP = 1.6 atm
2 litre
5 litre
10 litre
4 litre
2.
The equilibrium constants of the following reactions are:
| N2 + 3H2 ⇌ 2NH3 : | K1 |
| N2 + O2 ⇌ 2NO : | K2 |
| H2 + ½O2 ⇌ H2O : | K3 |
The equilibrium constant (K) for the reaction ;
\({ 2NH }_{ 3 }+5/2{ O }_{ 2 }\overset { K }{ \rightleftharpoons } 2NO+{ 3H }_{ 2 }{ O },\) will be
\(K_2^3{K_3\over K_1}\)
\(K_1{K_3^3\over K_2}\)
\(K_2{K_3^3\over K_1}\)
\(K_2{K_3\over K_1}\)
3.
[Co(H2O)6]2+ (aq) (pink) + 4Cl– (aq) ⇌ [CoCl4]2– (aq) (blue) + 6 H2O (l)
In the above reaction at equilibrium, the reaction mixture is blue in colour at room temperature. On cooling this mixture, it becomes pink in colour. On the basis of this information, which one of the following is true?
ΔH > 0 for the forward reaction
ΔH = 0 for the reverse reaction
ΔH < 0 for the forward reaction
Sign of the ΔH cannot be predicted based on this information
4.
For the formation of Two moles of SO3(g) from SO2 and O2, the equilibrium constant is K1. The equilibrium constant for the dissociation of one mole of SO3 into SO2 and O2 is __________
\(1/K_1\)
\(K_1^2\)
\(({1\over K_1})^{1/2}\)
\({K_1\over 2}\)
5.
Which of the following is not a general characteristic of equilibrium involving physical process ___________
Equilibrium is possible only in a closed system at a given temperature
The opposing processes occur at the same rate and there is a dynamic but stable condition
All the physical processes stop at equilibrium
All measurable properties of the system remains constant
1.
(b)
5 litre
2.
(c)
\(K_2{K_3^3\over K_1}\)
3.
(a)
ΔH > 0 for the forward reaction
4.
(c)
\(({1\over K_1})^{1/2}\)
5.
(c)
All the physical processes stop at equilibrium
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