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प्रश्न
Fill in the blanks:
The physical state of a substance, which has neither fixed volume nor fixed shape is a ______.
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उत्तर
The physical state of a substance, which has neither fixed volume nor fixed shape is a gas.
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संबंधित प्रश्न
Give two reasons for saying that wood is a solid.
Write whether the following statements are true or false:
Only water can exist in three different states
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.
Matter in any state is composed of particles. Compare the three states of matter i,e. solids, liquids, and gases with reference to:
(a) intermolecular space
(b) the intermolecular force of attraction
(c) movement of particles
Explain the term ‘Interconversion of matter’. With reference to ice, water, and water vapour show diagrammatically the change of state of matter from solid to liquid to gaseous and back to the original state.
Write the states of water.
Complete the Analogy:
Solids: incompressible:: Gas: ______.
Gases have neither a definite shape nor a definite volume.
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]
