(English Medium) ICSE Class 9 - CISCE Question Bank Solutions for Chemistry

The diagram represents the green house effect.

Does the sea level rise or fall due to global warming. Explain.

Give a chemical test to distinguish between the following gases:

Carbon dioxide and sulphur dioxide

Give a chemical test to distinguish between the following gases:

Sulphur dioxide and chlorine.

Using a platinum wire, cone, hydrochloric acid and a Bunsen burner how would you distinguish between the three salts e. sodium chloride, potassium chloride and calcium chloride. Explain in brief the method used for the same.

Select the correct gas from given options which match with the following description:

Turns moist blue litmus red and then bleaches it.

Select the correct gas from given options which match with the following description:

Turns moist red litmus paper blue.

Select the correct gas from given options which match with the following description:

Turns lime water milky and blue litmus paper slightly pink.

Select the correct gas from given options which match with the following description:

Turns cobalt chloride paper from blue to pink.

Select the correct gas from given options which match with the following description:

Turns lead acetate paper from white to silvery black.

How does an increase in temperature affect the solubility of NaCl?

How does an increase in temperature affect the solubility of CaSO₄ in water?

Give reason for white power forms on the surface of washing soda crystals which are left exposed to the air.

Complete the following:

The solubility of a gas at constant pressure may be increased by decreasing the

Sulphur has an atomic number of 16 and a mass number of 32. State the number of protons and neutrons present in the nucleus of sulphur.

What is the effect of temperature on the solubility of KNO, and calcium sulphate in water?

How can you increase the solubility of a given volume of gas in water?

Name the element which does not contain any neutrons in its nucleus.

Define solubility. Give the main steps with the calculations involved of the method to determine the solubility of a given salt ‘X’ in water.

From the following list of salts: Na₂SO₄, 10H₂O, NaCl, KClO₃, NaNO₃, Ca(OH)₂, NH₄Cl, KCI, CaSO₄.

State the salts whose solubility increases with a rise in temperature of the water.

From the following list of salts: Na₂SO₄, 10H₂O, NaCl, KClO₃, NaNO₃, Ca(OH)₂, NH₄Cl, KCI, CaSO₄.

State the salts whose solubility decreases with a rise in temperature of the water.