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

State your observations when Concentrated Sulphuric acid is added to Sugar Crystals

Name the gas evolved when the following mixtures are heated:

Calcium hydroxide and Ammonium Chloride

A, B, C, and D summarize the properties of sulphuric acid depending on whether it is dilute or concentrated.

A = Typical acid property

B = Non volatile acid

C = Oxidizing agent

D = Dehydrating agent

Choose the property (A, B, C or D) depending on which is relevant to each of the following

1) Preparation of Hydrogen chloride gas

2) Preparation of Copper sulphate from copper oxide.

3) An action of conc. Sulphuric acid on Sulphur.

Identify the cations in the following case :

NH₄OH Solution, when added to the Solution (B), gives white ppt which does not dissolve in excess.

Identify the cations in the following case:

NaOH Solution, when added to Solution (C), gives white ppt which is insoluble in excess

Select from the list the gas that matches the description given in case

[ammonia, ethane, hydrogen chloride, hydrogen sulfide, ethyne]

This gas produces dense white fumes with ammonia gas.

The acid which is used in the preparation of a volatile acid

Identify the acid in the following case:

The acid which produces sugar charcoal from sugar.

Identify the acid in the following case:

The acid on mixing with lead nitrate solution produces a white precipitate, which is insoluble even on heating.

Give appropriate scientific reasons for The electrical conductivity of acetic acid is less in comparison to the electrical conductivity of dilute sulphuric acid at a given concentration.

Choose the most appropriate answer from the following list of oxides which fit the description.

[SO₂, SiO₂, Al₂O₃, MgO, CO, Na₂O]

A basic oxide.

Choose the most appropriate answer from the following list of oxides which fit the description

[SO₂, SiO₂, Al₂O₃, MgO, CO, Na₂O]

An oxide which dissolves in water forming an acid

Choose the most appropriate answer from the following list of oxides which fit the description

[SO₂, SiO₂, Al₂O₃, MgO, CO, Na₂O]

An amphoteric oxide

Identify the anion present in the following compounds:

A salt D on treatment with dilute sulphuric acid produces a gas which turns lime water milky but has no effect on acidified potassium dichromate solution

Identify the anion present in the following compounds:
When barium chloride solution is added to salt solution E a white precipitate insoluble in dilute hydrochloric acid is obtained.

Give balanced chemical equations for Reaction of ammonia with sulphuric acid.

Give balanced chemical equations for the action of sulphuric acid on the following:

Potassium hydrogen carbonate.

Give balanced chemical equations for the action of sulphuric acid on the following:

Sulphur

In the contact process for the manufacture of sulphuric acid give the equations for the conversion of sulphur trioxide to sulphuric acid.

From the list of the following salts choose the salt that most appropriately fits the description is given in the following:

[AgCl, MgCl₂, NaHSO₄, PbCO₃, ZnCO₃, KNO₃, Ca(NO₃)₂]

An insoluble chloride.