ICSE Class 10 Equilibrium — Mock Test

Free online mock test for Equilibrium (ICSE Class 10 Chemistry) — 99 competency-based questions with instant marking. Try the samples below, then take the full test free.

Sample questions

1. 1.In a solution [H+] = 1 x 10^-4 M at 298 K. The hydroxide ion concentration [OH-] is:
   • A.1 x 10^-4 M
   • B.1 x 10^-10 M
   • C.1 x 10^-7 M
   • D.1 x 10^-14 M
2. 2.For an acid with ionization constant Ka = 1 x 10^-5, the value of pKa is:
   • A.3
   • B.5
   • C.9
   • D.14
3. 3.The law of mass action states that the rate of a chemical reaction is proportional to the product of the:
   • A.Active masses (molar concentrations) of the reactants raised to their stoichiometric coefficients
   • B.Masses of the catalysts present
   • C.Temperatures of the reactants
   • D.Volumes of the reacting gases
4. 4.In writing the equilibrium constant expression for a heterogeneous equilibrium, the concentration terms for pure solids and pure liquids are:
   • A.Raised to a power of 2
   • B.Taken as constant and omitted from the expression
   • C.Included with their molar concentrations
   • D.Replaced by their masses
5. 5.Adding a catalyst to a reaction at equilibrium:
   • A.Shifts the equilibrium to the products
   • B.Increases the equilibrium concentration of products
   • C.Does not change the equilibrium composition but helps reach it faster
   • D.Increases the value of the equilibrium constant