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Equilibrium Class 11 MCQs: Download CBSE Class 11 Chemistry Chapter 6 MCQs for quick revision and exam preparations. Practise important questions prepared by subject experts.
MCQs on Class 11 Equilibrium: Class 11 students can now practise for their Chemistry tests and annual CBSE examination with the help of a set of important MCQs provided by Jagran Josh. You will be able to get access to the quality questions which have been prepared by the experienced faculty. In this article, you will get MCQs, particularly for the CBSE Class 11 Chemistry Chapter – 5, Equilibrium. All questions have been designed as per the latest CBSE Syllabus and NCERT’s Revised Book. These questions are quite helpful not only for the exam preparations but for concept clarity as well. Read and download all questions and answers in PDF from here and use them to score high in your CBSE Class 11 Chemistry Exam 2023-24.
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CBSE Class 11 Chemistry Syllabus 2023-24
CBSE Class 11 Chemistry Deleted Syllabus 2023-24
Check MCQs with Answers for Class 11 Chemistry Chapter – Equilibrium below:
Q.For a pure substance, at atmospheric pressure, the temperature at which the solid and liquid phases are at equilibrium is called:
(a) freezing point
(b) boiling point
(c) kraft temperature
(d) absolute temperature
Answer:(a) freezing point
Q.The acid-base pair that differs by one __________ is called a conjugate acid-base pair.
(a) electron
(b) proton
(c) hydronium ion
(d) hydroxyl ion
Answer:(b) proton
Q.For Kp = Kc:
(a) Δn=1
(b) Δn>1
(c) Δn=0
(d) Δn<1
Answer:(c) Δn=0
Q.Henry’s Law is applicable for
(a) solid-liquid equilibrium
(b) solid-gas equilibrium
(c) gas-liquid equilibrium
(d) gas-solution of gas equilibrium
Answer:(d) gas-solution of gas equilibrium
Q.0.10 M CH3COOH is 1.34% ionised, calculate its Ka.
(a) 1.8 x 10-5
(b) 5×10-4
(c) 1.8x 10-4
(d) 4×10-5
Answer:(a) 1.8 x 10-5
Q.If Qc > Kc, the reaction proceeds in the
(a) forward reaction
(b) backward reaction
(c) at equilibrium
(d) none of these
Answer:(b) backward reaction
Q.Which of the following salts will give the highest pH in water?
(a) KCl
(b) NaCl
(c) Na2CO3
(d) CuSO4
Answer:(c) Na2CO3
Q.In which of the following equilibrium Kc and Kp are not equal?
(a) 2C (s) + O(g) ⇌ 2CO2 (g)
(b) 2NO (g) ⇌ N2 (g) + O2 (g)
(c) SO2 (g) + NO2 (g) ⇌ SO3(g) + NO(g)
(d) H2(g) + I2 (g) ⇌ 2HI(g)
Answer:(a) 2C (s) + O(g) ⇌ 2CO2 (g)
Q.For the reaction, N2(g) + O2(g) ⇌2NO(g), the production of NO will be favoured by
(a) High pressure
(b) Low pressure
(c) Presence of catalyst
(d) High concentration of N2
Answer:(d) High concentration of N2
Q.The solubility product of CaSO4 is 6.4 x 10-5. The solubility of salt in mol/L is
(a) 8×10-16
(b) 8×10-2
(c) 8×10-3
(d)16x 10-3
Answer:(c) 8×10-3
Q.In a reversible reaction, two substances are in equilibrium. If the concentration of each one is doubled then the equilibrium constant will be
(a) Reduce to half its original value
(b) Reduced to one fourth of its original value
(c) Doubled
(d) Constant
Answer:(d) Constant
Q.For a buffer solution which of the following is true?
(a) pH does not change at all on addition of acid or base
(b) pH change is very little on addition of acid or base
(c) It is a mixture of strong acid with its salt
(d) It is a mixture of strong base with its salt
Answer:(b) pH change is very little on addition of acid or base
Q.The pKa of acetic acid and pKb of ammonium hydroxide are 4.76 and 4.75 respectively. The pH of
ammonium acetate solution will be
(a) 0
(b) 6.05
(c) 7.05
(d) 7.005
Answer:(d) 7.005
Q.Which of the following is the weakest Bronsted acid?
(a) F–
(b) Cl–
(c) Br–
(d) I–
Answer:(d) I–
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