ICSE ICSE Class 8 - CISCE Question Bank Solutions for Chemistry

Give a reason why boiled water tastes flat.

Select the correct answer of the following statement:

The medium of dissolution which allows the solute to dissolve in it.

Explain the term ‘variable valency’.

Copper having electronic configuration 2,8,18,1 exhibits variable valency. Give a reason for the same and name the compound CuCI and CuCl₂.

Explain the term ‘symbol’.

With reference to water and ammonia as compounds respectively, state the valency of oxygen and nitrogen.

Write the chemical formula of the following compound in a step-by-step manner –

Potassium chloride

Write the chemical formula of the following compound in a step-by-step manner –

Sodium bromide

Write the chemical formula of the following compound in a step-by-step manner –

Potassium nitrate

Write the chemical formula of the following compound in a step-by-step manner –

Calcium hydroxide

Write the chemical formula of the following compound in a step-by-step manner –

Calcium bicarbonate

Write the chemical formula of the following compound in a step-by-step manner –

Sodium bisulphate

Write the chemical formula of the following compound in a step-by-step manner –

Potassium sulphate

Write the chemical formula of the following compound in a step-by-step manner –

Zinc hydroxide

Write the chemical formula of the following compound in a step-by-step manner –

Potassium permanganate

Write the chemical formula of the following compound in a step-by-step manner –

Potassium dichromate

Write the chemical formula of the following compound in a step-by-step manner –

Aluminium hydroxide

Write the chemical formula of the following compound in a step-by-step manner –

Magnesium nitride

Write the chemical formula of the following compound in a step-by-step manner –

Sodium zincate

Write the chemical formula of the following compound in a step-by-step manner –

Copper [II] oxide