Which One of the Following Statement is Correct in Respect of Fluids? - Science


Which one of the following statement is correct in respect of fluids?


  • only gases behave as fluids

  • gases and solids behave as fluids

  • gases and liquids behave as fluids

  • only liquids are fluids



Gases and liquids behave as fluids

Gases and liquids behave as fluids because fluids are the substances that have the ability to flow. Gases and liquids can flow easily because their particles are free to move.

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Chapter 1: Matter in Our Surroundings - Very Short Answers [Page 20]


Lakhmir Singh Class 9 Chemistry - Science Part 2
Chapter 1 Matter in Our Surroundings
Very Short Answers | Q 56 | Page 20


Which of the following are matter?

Chair, air, love, smell, hate, almonds, thought, cold, cold drink, smell of perfume.

What are the characteristics of particles of matter?

When sodium chloride is added to a definite volume of water and stirred well, a solution is formed, but there is no increase in the level of water. Why?

Why can a piece of chalk be broken easily into smaller pieces while a coal piece cannot be broken easily?

Water cycle is an example of inter conversion of states of water. Explain.

Fill in the blank:

Any matter which has a definite.................... but no definite shape is called a...............

Write whether the following statement is true or false.
Only water can exist in three different states.

Write whether the following statement is true or false.
Solids have the largest inter-molecular space.

For the following statement, say whether it describe a solid, a liquid or a gas.
 Particles are quite close together.

A kind of matter which can sublinje is

  1. water
  2. plastic
  3. milk
  4. iodine

Which of the following is a property of the liquids ?

  1. they can flow
  2. they are malleable
  3. they have a definite shape
  4. they are rigid

Give reason:

A drop of ink added to water in a glass turns whole water blue.

What is the relation between intermolecular space and intermolecular force ?

Write your observation and conclusion for the following

When one of the balloons suspended to the metre scale is punctured while other remains inflated ?

Give reason  of When a teaspoon of sugar is added to half a glass of water and stirred, the water level in the glass does not rise.

Give reason

A red ink drop added to small amount of water in a glass turns water red in some time.

Give an experiment to explain that there are intermolecular spaces between water molecules.

There are large intermolecular gaps in

Even two or three crystals of potassium permanganate can impart colour to a very large volume of water. Which characteristic of particles of matter is illustrated by this observation?

A piece of chalk can be broken into small particles by hammering but a piece of iron cannot be taken into small particles by hammering. Which characteristic of the particles of matter is illustrated by these observations?

What is the general name of :

  1. rigid form of matter ?
  2. fluid forms of matter ?

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

In which of the following conditions, the distance between the molecules of hydrogen gas would increase?

  1. increasing pressure on hydrogen contained in a closed container
  2. some hydrogen gas leaking out of the container
  3. increasing the volume of the container of hydrogen gas
  4. adding more hydrogen gas to the container without increasing the volume of the container

Which of the following statement is incorrect?

When a beam of sunlight enters a room through a window, we can see tiny particles X suspended in a gas (or rather a mixture of gases) Y which are moving rapidly in a very haphazard manner.

  1. What could particles X be ?
  2. Name the gas (or mixture of gases) Y.
  3. What is the phenomenon exhibited by particles X known as ?
  4. What is causing the movement of particles X ?
  5. What conclusion does the existence of this phenomenon give us about the nature of matter ?

Define: diffusion

 Define: interconversion of states of matter.

What are the two conditions for the interconversion of states of matter?

Give reasons for the following:

Solids have a definite shape and are highly rigid while gases have to definite shape and are least rigid.

Give reasons for the following:

Sugar can be distinguished from talcum powder using water.

Give reasons for the following:

Water on freezing turns into ice.

Give reasons for the following:

A bottle of perfume on opening evolves an odour which can be sensed over a long distance.

Complete the statement given below by selecting the correct word.

The space between atoms in gases is maximum while in ____ is minimum,

Fill in the blank with the correct word Given below.

The space between atoms’ [molecules] of solids is ____

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

Fill in the blanks:

Matter is defined as anything that occupies _______ and has _______

Fill in the blank:

Particles in a gas possess ___________ kinetic energy.

State in which of the following examples ie. a piece of wood, water, light gas is the Inter-particle space maximum.

200 ml of water is poured into a bowl of 400 ml capacity. The volume of water will be ______.

Among the following ______ is not a mixture.

Water obtained from tube wells is usually ______ water.

Air is not compressible.

Match the following.

Property Example
Breaks easily (Brittle) Metal pan
Bends readily Rubber band
Can be stretched easily Cotton wool
Gets compressed easily Mud pot
Gets heated readily Plastic wire

Mr. Raghu returns home on a hot summer day and wants to have buttermilk. Mrs. Raghu has the only curd. What can she do to get buttermilk? Explain

In a glass containing some water, tamarind juice and sugar are added and stirred well. Is this a mixture? Can you tell why? Will this solution be sweet or sour or both sweet and sour?

Which one of the following element name is not derived from planet?

The Cow and Birds are nonliving things.

Mention any two characteristics of the particles of matter.

You are provided with a mixture of naphthalene and ammonium chloride by your teacher. Suggest an activity to separate them with well labelled diagram.


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