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प्रश्न
Differentiate between melting point and boiling point, giving atleast one example of each.
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उत्तर
MELTING POINT:
The temperature at which a solid starts changing into LIQUID without further increase in temperature is called MELTING POINT.” Or The constant temperature at which solid changes into liquid.”
Example: Ice (solid) melts at 0°C into water (liquid) when heated.
BOILING POINT :
“The temperature at which a LIQUID start changing in vapour without a further rise in temperature.
Or
‘The constant temperature at which a LIQUID starts changing into GAS (vapours)
Example: Boiling point of water (liquid) is 100°C.
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संबंधित प्रश्न
Rapid conversion of water into steam is an example of
Explain the terms boiling point.
State the boiling point of water.
What is the physical state of water at 100°C.
Which condition out of the following will increase the evaporation of water?
Evaporation of a liquid at room temperature leads to a ____________ effect.
The phenomenon of change of a liquid into the gaseous state at any temperature below its boiling point is called ____________.
We would have observed that the plate that covers the cooked food items has water droplets inside. Why? Explain.
Assertion (A): Burning of a candle is considered a physical as well as chemical change.
Reason (R): Melting of wax is a physical change melted wax turns into vapours and then bums which is a chemical change.
Assertion (A): No-new substance is formed when water is heated to get steam.
Reason (R): Conversion of water into steam is a physical change.
