ICSE ICSE Class 8 - CISCE Question Bank Solutions for Chemistry

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Mixtures can be ...................... or .....................

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................. is used when the constituents of a mixture of solids have difference in their weights

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Iodine, camphor, naphthalene, ammonium chloride and dry ice are some substances that ....................................

Tick the most appropriate answer

The methods of separating components of a given mixture are based on the

1. physical properties and state of the components.
2. colour of the components only.
3. state of the components.
4. none of these

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 The different constituents of ink are separated by

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A ________ substance has only one kind of matter.

A _______ is formed when one liquid is dispersed as tiny droplets throughout another liquid

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Immiscible liquids are separated by using a ________.

Write true or false 

Milk is an emulsion.

Write true or false 

The constituents of a mixture can only be separated by chemical means

 Write true or false

Handpicking can be used as a separation technique if the particle size of the constituents of the mixture is the same.

Differentiate between the following

Supernatant liquid and Fill rate

Name two methods by which solid-solid mixtures can be separated.

How can you separate iron metal from non-magnetic impurities ?

Name the different types of chromatographic techniques.

Why is filtration a better technique than sedimentation and decantation ?

How is distillation method different from evaporation?

What is centrifugation ? Also write the principle on which it works.

Define water of crystallization. Give two examples with formulae.

Give two examples of Crystalline anhydrous substances.