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Which of the following are matter? Chair, air, love, smell, hate, almonds, thought, cold, lemon water, smell of perfume. - Science

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प्रश्न

Which of the following are matter?

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

एका वाक्यात उत्तर
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उत्तर

Chair, air, smell, almonds, lemon water and smell of perfume.

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Notes

Note: The sense of smell is not matter. However, the smell or odour of a substance is classified as matter. The smell of any substance (say, perfume) can be classified as matter. This is because, perfume is in liquid state inside the bottle. It comes out in the form of tiny droplets. These droplets of perfume are matter and spread out in the atmosphere to create a sense of smell. This smell can be detected by our olfactory system.

  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 1: Matter in Our Surroundings - Intext question [पृष्ठ ३]

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एनसीईआरटी Science [English] Class 9
पाठ 1 Matter in Our Surroundings
Intext question | Q 1. | पृष्ठ ३

संबंधित प्रश्‍न

Fill in the blank: 

The process in which a solid directly changes into a gas is called ....................


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?


State the general properties of a solid.


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 of The odour of scent spreads in a room.


Bromine particles are almost twice as heavy as chlorine particles. Which gas will diffuse faster; bromine (vapour) or chlorine? Explain your answer.


Match the characteristics of the three states of matter in List I with their correct answer from List II.

List I List II
1. Have no definite shape, volume or free surface A: Solids only
2. Are highly compressible and least rigid B: Liquids only
3. Have a definite volume, no definite shape and are slightly diffusable C: Gases only
4. Are not compressible and have no diffusability D: Liquids and gases only
5. Have mass and occupy space E: Solids and gases only
  F: Solids, liquids and gases

State in which of the following examples ie. a piece of wood, water, light gas is the Energy possessed by particles of matter, very large.


‘Inter-particle attraction between atoms of gases is very weak’. State five properties of gases which correlate as a consequence of the weak inter-particle attraction between particles of gases.


With reference to the liquid state of matter – answer the following

State why the inter-particles attraction decreases to negligible.


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