Water obtained from tube wells is usually ______ water.

Fill in the Blanks

Water obtained from tube wells is usually Impure water.

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Chapter 3 Matter around Us
Evaluation | Q II. 6. | Page 51

Give reasons for the following observation:

The smell of hot sizzling food reaches you several metres away, but to get the smell from cold food you have to go close.

Fill in the blank:

The change of water vapour into water is called ......................

Write whether the following statement is true or false.
A gas has no free surface.

For the following statement, say whether it describes a solid, a liquid or a gas.
Particles move about very quickly.

The state of matter which has no definite shape or volume is called

Give reason Electricity is not considered matter .

What is meant by 'diffusion'? Give one example of diffusion in gases.

Define: interconversion of states of matter.

Differentiate the general properties of solids, liquids and gases in the form of a table — with reference to space.

Complete the statement by filling the blank with the correct word given below.

In naphthalene, the inter-particle attraction is _______.