Advertisements
Advertisements
प्रश्न
Why is solid carbon dioxide known as dry ice ?
उत्तर
Solid carbon dioxide is known as dry ice because it resembles ice and does not melt on heating. When we heat solid carbon dioxide it directly gets converted to vapour without passing through the liquid state.
APPEARS IN
संबंधित प्रश्न
Why is ice at 273 K more effective in cooling than water at the same temperature?
What do you mean by the change of state? Write the flow chart showing the complete cycle of change of state.
The boiling point of alcohol is 78° C. What is this temperature on Kelvin scale ?
Explain why, naphthalene balls kept in stored clothes in our homes disappear over a period of time.
The boiling point of ethane is – 88°C. This temperature will be equivalent to :
Give reasons:
Why a solid does not flow, but a liquid flows?
Name the phenomenon which causes the following changes:
Conversion of water into steam
With the help of a simple diagram how would you show that – solids expand on heating
State which of the following statement is true or false. If false write the correct statement.
Solids are highly compressible and rigid.
What is it made from? Why?
A sickle to cut sugarcane.
