Advertisements
Advertisements
Question
Give reasons
The odour of scent spreads in a room.
Solution
Scent fumes (molecules) being gases fill the spaces between air molecules and the molecules of air fill the spaces between scent molecules due to diffusion, fumes spread into a room
APPEARS IN
RELATED QUESTIONS
For the following statement, say whether it describes a solid, a liquid or a gas.
Particles are far apart and move in all directions
The three main states of matter are solids, liquids, and gases. Compare the three states with reference to the following characteristics of matter
(a) volume
(b) shape
(c) compressibility
(d) diffusion.
Complete the given analogy.
Solid: Definite shape:: ______: Shape of the vessel.
A rubber ball changes its shape on pressing. Can it be called a solid?
Complete the Analogy:
Solids: incompressible:: Gas: ______.
Intermolecular forces of attractions are maximum in ______.
Gases have neither a definite shape nor a definite volume.
How the matter is grouped on the basis of physical states?
What is the physical state of water at 100ºC?
A strong current of trivalent gaseous boron passed through a silicon crystal decreases the density of the crystal due to part replacement of silicon by boron and due to interstitial vacancies created by missing Si atoms. In one such experiment, one gram of silicon is taken and the boron atoms are found to be 1000 ppm by weight, when the density of the Si crystal decreases by 12%. The percentage of missing vacancies due to silicon, which are filled up by boron atoms will be ____ g. [Given · Atomic wt. Si= 30, B = 11]
