Why it is that to smell cold food, we have to go close but smell of hot food reaches us several meters away?
Why is it that a wooden chair should be called a solid and not a liquid?
Give an experiment to show that ammonium chloride undergoes sublimation.
If the humidity in the air increase, then the rate of evaporation: – (a) decrease (b) increase (c) remains same (d) both (b) and (a) depending upon the temperature
Which of the following statement is correct?(a) boiling is a bulk phenomenon and evaporation is a surface phenomenon (b) boiling is a surface phenomenon and evaporation is a bulk phenomenon (c) boiling and evaporation both are surface phenomenon (d) boiling and surface both are bulk phenomenon
If the temperature of a place is increase then evaporation:-(a) decrease (b) increase (c) remain same (d) none of the above
Which of the following have least inter atomic spacing? (a) solid (b) liquid (c) gases (d) plasma
What is evaporation? What are the factors affecting it?
What happen when we apply pressure to the particles of matter?
Define latent heat of vaporization and latent heat of fusion.
If the melting point of an object A is high then what state you expect it to be at room temperature?
Are the three state of matter inter-convertible? How can they interconnect?
How does evaporation cause cooling?
Why should we wear cotton clothes in summer?
Differentiate between physical and chemical change
