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प्रश्न
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.
विकल्प
True
False
उत्तर
True
संबंधित प्रश्न
Convert the following temperature to the Kelvin scale.
373°C
Give an example of desirable change which can also be undesirable.
What is the common name of solid carbon dioxide ?
Why does the temperature of a substance remain constant during the change of state ?
Define the following term Melting.
Define the following term Boiling.
What are the two ways in which the physical states of matter can be changed ?
Which of the following factors are responsible for the change in state of solid carbon dioxide when kept exposed to air ?
- increase in pressure
- ncrease in temperature
- decrease in pressure
- decrease in temperature
Match the following:
| Column A | Column B |
| (a) Evaporation of water | (i) Non-periodic change |
| (b) Milk turning sour | (ii) Periodic change |
| (c) Earthquake | (iii) Chemical change |
| (d) Change of seasons | (iv) Physical change |
| (e) Glowing of bulb | (v) Reversible change |
Write whether the following statement is true or false:
All solids, on heating, first change to the liquid and then to the gaseous state always
