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प्रश्न
Give two examples for the following :
Substances which sublime.
उत्तर
Naphthalene, camphor, dry ice.
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संबंधित प्रश्न
Define: Gas.
Write whether the following statement are true or false.
A gas has no free surface.
For the following statements, say whether it describes a solid, a liquid or a gas.
Particles are quite close together
Gases
Fill in the blank
All the molecules of a substance are .............
The molecules in a substance are in motion. What type of path do they follow?
Give reason :
A gas fills up the space available to it.
Give reason :
When an empty gas jar is inverted over a gas jar containing a coloured gas, the gas also spreads into the empty jar.
Write scientific reasons.
Lemon sherbat has a sweet, sour and salty taste, and it can be poured into a glass.
Write scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
