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प्रश्न
Give two examples of the following:
Substances which sublime.
उत्तर
Naphthalene, camphor, dry ice.
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संबंधित प्रश्न
For any substance, why does the temperature remain constant during the change of state?
Mention a change which is always desirable.
What is meant by saying that the latent heat of vaporisation of water is 22.5 × 105 J/kg ?
A kind of matter which can sublime is
Photosynthesis is a natural process by which green plants manufacture food in the presence of sunlight.
Are any new products formed during the above process.
State whether the following statement is true or false. If false write the correct statement.
Desirable changes are meaningful, while undesirable changes are unfavourable.
Matter in any state is composed of small particles – molecules, atoms, or ions. Differentiate the terms above in Italics.
State which of the three states of matter Le. solids, liquids or gases – have
(a) No definite volume
(b) A definite shape
(c) High density
(d) No free surfaces
(e) Particles – which diffuse very easily.
Select the correct answer from A, B, C, D & E for the statement given below:
The state of matter which has ___________ least density & no free surfaces.
With reference to the liquid state of matter – answer the following
The heat energy supplied to the liquid is absorbed by its molecule & stored as which form of energy.
