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प्रश्न
State the property of the following substance.
Naphthalene on heating directly turns into vapour.
पर्याय
Physical
Chemical
उत्तर
Chemical
संबंधित प्रश्न
Why is ice at 273 K more effective in cooling than water at the same temperature?
What do you observe when :
water is boiled
Convert the temperature of 373° C to the Kelvin scale.
Under what conditions heat can be given to a substance without raising its temperature ?
Explain briefly, how gases can be liquefied.
Draw a labelled diagram of the experimental set-up to demonstrate the sublimation of ammonium chloride.
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 sublime.
In the paragraph below, write ‘solid’, ‘liquid’ or ‘gas’ in each of the brackets depending on the substance referred to just before.
On a bright sunny day, Riya and Gargi are playing with a ball ( ) in the park. Gargi feels thirsty. So, Riya brings tender coconut water ( ) for her. At the same time, a strong breeze ( ) starts blowing and it also begins to rain ( ). They run back into the house ( ), change their clothes ( ), and then their mother gives them a cup ( ) of hot milk ( ) to drink.
With reference to the liquid state of matter – answer the following
On heating, the liquid, do the particles gain or lose energy.
