(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

From the formulae listed below, choose one in each case corresponding to the salt having the given description :
AgCI, CuCO_3, CuSO4.5H₂O, KNO_3, NaCI, NaHSO_4, Pb(NO₃), ZnCO₃, ZnSO₄.7H₂O
(a) An acid salt
(b) An insoluble chloride 
(c) On treating with concentrated sulphuric acid, this salt changes from blue to white.
(d) On heating this salt changes from green to black.
(e) This salt gives nitrogen dioxide on heating

Choosing the correct words given in brackets, complete the sentence given below:
An acid is a compound which, when dissolved in water gives ______ ( hydronium / hydroxide) ions as the only ______ (positive/negative) ions.

Choosing the correct words given in brackets, complete the sentence given below:
A(n) ______ (acid/basic) salt is one in which the hydrogen of an acid has been partially replaced by a ______ (metal/non-metal).

Macth the following.

What is the term defined by the following?

A salt containing a metal ion surrounded by other ions or molecules.

Solution A is strong acid B weak acid C strong alkali.

Which solution contains solute molecules in addition to water molecules?

Select the correct answer from the choices a,b,c and d which are given.Write only the letter corresponding to the correct answer.
An example of a complex salt is

Name a white, insoluble oxide that dissolves when fused with caustic soda or caustic potash.

Using sodium hydroxide solution, how will you distinguish: Zinc nitrate solution from calcium nitrate solution

Using sodium hydroxide solution, how will you distinguish:
Iron (II) chloride from iron (III) chloride

Using sodium hydroxide solution, how will you distinguish:
Lead hydroxide from magnesium hydroxide.

Sodium hydroxide solution is added to solution A. A white precipitate is formed which is soluble in excess sodium hydroxide. Name the metal ion present in A.

Write equation for the reaction that will take place when copper sulphate solution is added to sodium hydroxide solution.

Three test tubes contain calcium nitrate solution, zinc nitrate solution and lead nitrate solution.Describe the effect of Adding sodium hydroxide solution to each portion in turn till it is in excess.

State what do you observe when:
Neutral litmus solution is added to alkaline solution

Write the observation, and balanced equation for the following reaction:
Sodium hydroxide is added dropwise to a solution of zinc sulphate, till it is in excess.

Identify the substance Q based on the information given below:
The white crystalline solid Q is soluble in water. It liberates a pungent smelling gas when heated with sodium hydroxide solution.

Choose the correct answer from the options given below :
Hydroxide of this metal is soluble is sodium hydroxide solution

State Gay-Lussac's law of combining volumes.

How does Avogadro's law explain Gay - lussac's law of combining volumes?