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प्रश्न
Why does this happen?
Kerosene left open in a dish disappears.
उत्तर
Kerosene left open in a dish is subject to surrounding temperature. As the temperature is more, kerosene starts continuously evaporating and finally disappears.
संबंधित प्रश्न
What is the physical state of water at 250°C.
Convert the following temperature to the celsius scale.
293 K
How do you say that the process of digestion is a chemical change ?
Explain why, a small volume of water in a kettle can fill a kitchen with steam.
Define 'melting point' of a substance ? What is the melting point of ice
Define: Brownian movement
Fill in the blanks:
Water boils at ______.
What will happen if....? And why?
A bell is made of wood.
State whether the following statement is true or false. If false write the correct statement.
During a chemical change the composition of the original substance is not altered and the change is irreversible.
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.
