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प्रश्न
Give reasons for the following:
A bottle of perfume on opening evolves an odour which can be sensed over a long distance.
उत्तर
A bottle of perfume on opening evolves an odour because gases diffuse very easily and odour spreads over a large distance.
संबंधित प्रश्न
Which of the following are matter?
Chair, air, love, smell, hate, almonds, thought, cold, lemon water, smell of perfume.
Fill in the blank:
The process in which a solid directly changes into a gas is called ....................
Define interconversion of states of matter.
What are the two conditions for the interconversion of states of matter ?
Write whether the following statement is true or false.
There is no difference between evaporation and boiling.
Give reason Gases can be compressed easily .
Give reason of A gas fills up the space available to it.
The state of matter which has no definite shape or volume is called
‘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.
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?
