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प्रश्न
Ripening of fruits is a desirable change.
उत्तर
Ripening of fruits is a desirable change because this change is beneficial for the mankind and we desire to happen.
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संबंधित प्रश्न
What is the physical state of water at 0°C.
Dissolving salt in water is a reversible change.
Convert the temperature of 373° C to the Kelvin scale.
Name one property which is shown by ammonium chloride but not by sodium chloride.
What is the common name of solid carbon dioxide ?
Define the following term Melting.
The boiling point of ethane is – 88°C. This temperature will be equivalent to :
When heat is constantly supplied by a burner to boiling water, then the temperature of water during vaporisation :
Which of the following energy is absorbed during the change of state of a substance ?
Why is an egg kicked out of a bottle when air is blown inside the bottle?
Write whether the following statement is true or false:
Solids have the larger inter-molecular space
Write whether the following statement is true or false:
There is no difference between evaporation and boiling
Give two examples of the following:
Substances which are rigid and not compressible
A substance which can change its state
State which of the following statement is true or false. If false write the correct statement.
The conversion of water to ice is called freezing.
Fill in the blanks with the correct word/s from the bracket.
Ice on absorption of heat converts to ‘X’ a process called ____ [vaporization / melting]. ‘X’ changes to water vapour on ____ [heating / cooling]. Water vapour changes back to ‘X’ on ____ [freezing / condensation]. The constant temperature at which ice changes into ‘X’ is called its ____ [fusion point / melting point / boiling point].
Riya pours some water from her bottle into another bottle. Does it change the shape of the water?
What is inter-conversion of matter. Give the meaning of the terms involved in inter-conversion of matter
(a) Melting
(b) Vaporisation
(c) Liquefaction or condensation,
(d) Solidification or freezing
(e) Sublimation.
Draw a labelled schematic diagram representing the terms (a) to (e) involved in the inter-conversion of matter.
