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प्रश्न
Tick the most appropriate answer.
Chemical changes involve
पर्याय
change in shape
change in size
change in molecular composition
none of these
उत्तर
change in molecular composition.
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संबंधित प्रश्न
Convert the following temperature to the Kelvin scale.
373°C
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Fill in the following blank with suitable words :
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Write whether the following statement is true or false:
A gas has no free surface.
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Solids are highly compressible and rigid.
State which of the following statement is true or false. If false write the correct statement.
Atoms/molecules in gases move only about their own positions.
State the property of the following substance.
Lead chloride reacts with barium sulphate to give a white precipitate of lead sulphate.
State if the following is a physical property of a substance.
Water acidified with dilute sulphuric acid is a good conductor of electricity.
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Rubber is not fitted on a pair of tongs.
With reference to the liquid state of matter – answer the following
On heating, the liquid, do the particles gain or lose energy.
