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

Explain the following:

H₃PO₃ is not a tribasic acid.

Write balanced equation:

Copper sulphate solution with ammonium hydroxide solution.

A ______ coloured precipitate is formed when ammonium hydroxide is added to a solution of ferrous chloride.

The diagram given below is a representation of the Industrial preparation of Nitric acid by Ostwald’s process. With respect to the process answer the following questions:

1. Write the temperature and the catalyst required during the catalytic oxidation of ammonia.
2. Give balanced chemical equation for the reaction occurring duringthe conversion of nitrogen dioxide to nitric acid.

Explain the following:

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

Write balanced equation:

Copper sulphate solution with ammonium hydroxide solution. 

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.