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

Explain the following:

\[\ce{H3PO3}\] is not a tribasic acid.

Write balanced equation:

Copper sulphate solution with ammonium hydroxide solution.

The following is a list of methods for the preparation of salts.

A – direct combination of two elements.

B – reaction of a dilute acid with a metal.

C – reaction of a dilute acid with an insoluble base.

D – titration of a dilute acid with a solution of soluble base.

E – reaction of two solutions of salts to form a precipitate.

Choose from the above list A to E, the best method of preparing the following salt by giving a suitable equation in the following case:

Sodium sulphate.

The following is a list of methods for the preparation of salts.

A – direct combination of two elements.

B – reaction of a dilute acid with a metal.

C – reaction of a dilute acid with an insoluble base.

D – titration of a dilute acid with a solution of soluble base.

E – reaction of two solutions of salts to form a precipitate.

Choose from the above list A to E, the best method of preparing the following salt by giving a suitable equation in the following case:

Copper sulphate.

You are provided with the following chemicals:

NaOH, Na₂CO₃, H₂O, Zn(OH)₂, CO₂, HCI, Fe, H₂SO₄, CI₂, Zn.

Using the suitable chemicals from the given list only, state briefly how you would prepare sodium sulphate.

You are provided with the following chemicals:

NaOH, Na₂CO₃, H₂O, Zn(OH)₂, CO₂, HCI, Fe, H₂SO₄, CI₂, Zn.

Using the suitable chemicals from the given list only, state briefly how you would prepare sodium zincate.

You are provided with the following chemicals:

NaOH, Na₂CO₃, H₂O, Zn(OH)₂, CO₂, HCI, Fe, H₂SO₄, CI₂, Zn.

Using the suitable chemicals from the given list only, state briefly how you would prepare iron (II) sulphate.

You are provided with the following chemicals:

NaOH, Na₂CO₃, H₂O, Zn(OH)₂, CO₂, HCI, Fe, H₂SO₄, CI₂, Zn.

Using the suitable chemicals from the given list only, state briefly how you would prepare sodium chloride.

For each of the salt: A, B, C and D, suggest a suitable method of its preparation.

D is a soluble salt of zinc.

Choose the most appropriate answer from

(SO₂, SiO₂, Al₂O₃, CO, MgO, Na₂O)

An oxide which when dissolved in water form acid.

Select the word/s given which are required to correctly complete the blanks.

When solution M and O are mixed together, the products will be ______ and ______.

Select the word/s given which are required to correctly complete the blanks.

If a piece of magnesium was put into a solution M, ______ gas would be evolved.

For the preparation of the following salts - give a balanced equation in the following case.

Lead [II] chloride from lead carbonate [give two equations]

Give the basicity of sulphuric acid.

Give the basicity of phosphoric acid.

Name the acidic anhydride of the following acid:

Nitric acid

Name the acidic anhydride of the following acid:

Phosphoric acid

Name the acidic anhydride of the following acid:

Carbonic acid

On which factor does the strength of an acid depend?

The following experiment was performed in order to determine the formula of a hydrocarbon. The hydrocarbon X is purified by fractional distillation.

0.145 g of X was heated with dry copper (II) oxide and 224 cm³ of carbon dioxide was collected at S.T.P.

Calculate the empirical formula of X by the following step:

Calculate the number of moles of carbon dioxide gas.