ICSE ICSE Class 8 - CISCE Question Bank Solutions

State any one method – to separate the following mixtures – A mixture of different solid constituents – in a liquid constituent.

Explain with diagram the process used to – separate the following substance from the given mixtures - Ammonium chloride from a mixture of – ammonium chloride & potassium chloride.

Explain with diagram the process used to – separate the following substance from the given mixtures - Iron from a mixture of – iron & copper

Explain with diagram the process used to – separate the following substance from the given mixtures - Sulphur from a mixture of – sulphur & copper.

Explain with a diagram the process used to – separate the following substance from the given mixture.

Potassium nitrate from a mixture of – potassium nitrate & potassium chlorate.

Explain with a diagram the process used to – separate the following substance from the given mixture.

Lead carbonate [insoluble] from a mixture of – lead carbonate & water.

Explain with diagram the process used to – separate the following substance from the given mixtures - Lead nitrate [soluble] from a mixture of – lead nitrate & water Le. lead nitrate solution.

Explain with diagram the process used to – separate the following substance from the given mixtures - Carbon tetrachloride from a mixture of – carbon tetrachloride [heavier component] & water.

Explain with diagram the process used to – separate the following substance from the given mixtures - Benzene from a mixture of – benezene [b.p. 80°C] & toluene [b.p. 110°C].

Explain with diagram the process used to – separate the following substance from the given mixtures - Different dyes – in their liquid constituent ink.

Select the correct answer from the choice given below to complete the sentence :

A soluble solid is separated from an insoluble solid by ____________.

Select the correct answer from the choice given below to complete the sentence :

The reactive element from the two monoatomic elements is _____________.

Give a reason for the following statement :

Components in a mixture can be separated by physical methods only.

Give a reason for the following statement :

Centrifugation can be used for separating an insoluble heavier solid, present in an – insoluble solid-liquid mixture.

Give a reason for the following statement :

Zinc is considered an element, while zinc sulphide is considered a compound.

 State the law of conversation of mass.

What do you observe when, barium chloride solution is mixed with sodium sulphate solution ?

When magnesium is burnt in air, there is an increase in mass after the reaction.

What is mass ?

If an object weighs 6 kg on earth. What will be its weight on moon ?