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

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.

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 mass of carbon contained in this quantity of carbon dioxide and thus the mass of carbon in sample X.

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 mass of hydrogen in sample X.

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:

Deduce the ratio of atoms of each element in X (empirical formula).

When a metallic oxide is dissolved in water, the solution formed has a high concentration of ____________ ions (H⁺, h₃O⁺, OH^-)

Write a balanced chemical equation for the following: 

Action of concentrated sulphuric acid on Sulphur.

State one relevant observation for given reactions:

Addition of ethyl alcohol to acetic acid in the presence of concentrated Sulphuric acid