Chemistry Book Class 12 UP Board. We covered all the Chemistry Book Class 12 UP Board in this post for free so that you can practice well for the exam.
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Chemistry Book Class 12 UP Board Objective Questions for Students
The solubility product is applicable for an
(A) Saturated solution of sparingly soluble salt.
(B) Unsaturated solution of normal salt.
(C) Any salt solution.
(D) Molar solution of the salt
Option b – Unsaturated solution of normal salt
The pH of a buffer solution was made by mixing 25 ml of 0.02 M NH4OH and 25 ml of 0.02 M NH4CI at 25°C. (pKb of NH4OH = 4.8)
(A) 5.8
(B) 9.2
(C) 4.8
(D) 3.8
Option b – 9.2
A basic buffer is prepared by mixing
(A) Acetic acid and sodium acetate
(B) Sodium hydroxide and sodium chloride
(C) Ammonium hydroxide and ammonium chloride
(D) Sodium sulfate and sulphuric acid
Option c – Ammonium hydroxide and ammonium chloride
When an ionic product, is greater than the solubility product the solution becomes
(A) Saturated
(B) Unsaturated
(C) Colloidal
(D) Supersaturated or precipitated
Option d – Supersaturated or precipitated
Which of the following sulfides has the lowest solubility product?
(A) FeS
(B) MnS
(C) PbS
(D) ZnS
Option c – PbS
Which of the following will suppress the ionization of acetic acid in aqueous solution?
(A) NaCl
(B) HCI
(C) KCI
(D) NH4Cl
Option b – HCl
The pair which shows the common ion effect is
(A) AgCN + KCN
(B) NaCl + HCI
(C) NH4OH + NH4Cl
(D) BaCl₂ + Ba(NO3)2
Option c – NH4OH + NH4Cl
Purification of common salt based on
(A) Buffer solution
(B) Le-chatelier’s Principle
(C) Hydrolysis
(D) Common ion effect
Option d – Common ion effect
We covered all the chemistry book class 12 up board above in this post for free so that you can practice well for the exam.
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