ICSE ICSE Class 8 - CISCE Question Bank Solutions for Chemistry

What do you observe when Lead nitrate is heated.

Give two example of Colloid.

 What do you observe when Blue litmus solution is added to water ?

Give two examples Basic oxide .

Give two examples of  oxides.

Acidic oxide.

Give two examples of  oxides.

Amphoteric oxide

Give two examples of oxides.

 Neutral oxide

Differentiate between solution and suspension.

Colloids have the particle size range between

Explain the term of  Solute.

Explain the term of solvent.

Explain how the following factor affects the formation of a solution is proportion of the solute & the solvent.

Explain how the following factor affects the formation of a solution is particle size of the solute.

Explain how the following factor affects the formation of a solution is Temperature of the solvent.

Define the term ‘solubility ’ of a solute in water. If 10 g. of a solute is added to 100 g. of water at 50°C and stirred, it is seen that the total solute dissolves at that temperature giving an unsaturated solution. Is 10 g, the solubility of the solute in water. Give reasons.

Give a reason why on opening a bottle of soda [carbon dioxide dissolved in water] the gas escapes out with a ‘fizz’.

How are solutions generally classified. What is the basis of this classification.

Draw a table to differentiate – True solutions, colloidal solutions & suspensions – with respect to

1. Type of mixture
2. Solute particles in the mixture.

Give four examples of each of the above types of solutions i.e. true solution, colloidal solution & suspension. Give a reason why a true solution does not exhibit ‘Tyndall effect’.

Select the correct answer of the following statement:

A heterogenous mixture of undissolved particles in dispersion medium, visible to the naked eye.