Advertisements
Advertisements
प्रश्न
Give reasons
A red ink drop added to small amount of water in a glass turns the water red in some time.
Advertisements
उत्तर
When we put a drop of red ink in a glass of water, its particles diffuse with particles of water slowly but continuously and the water turns red
APPEARS IN
संबंधित प्रश्न
Name the smallest particle from which matter is made up.
What are molecules?
Fill in the blanks:
Any matter which has a definite ______ but no definite shape is called a ______.
For the following statement, say whether it describes a solid, a liquid or a gas.
Particles are far apart and move in all directions
Describe simple experiments to prove that solids have a definite volume
Describe simple experiments to prove that liquids have a definite volume
Complete the statement given below by selecting the correct word.
Solids and liquids have a definite ____ but gases do not.
Complete the given analogy.
Solid: Rigidity:: Gas: ______
The tendency of particles to spread out in order to occupy the available space is ______.
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]
