Question 3 :
Choose the correct alternative from the choice given for the following statement:A substance which can not sublime is<br/>
Question 4 :
The liquid or gas in hot areas is _________ dense than the liquid or gas in cold areas.
Question 5 :
During hot sunny day, people sprinkle water on the roof because ______________.
Question 6 :
Arrange in the order indicated for solids, liquids and gases:<br>(i) Decreasing order - empty space between<br>(ii) Increasing order - tendency to flow
Question 7 :
The particles in solid are ________ packed, in liquid are ________ packed and in gas ___________ packed. 
Question 10 :
Early philosophers classified matter in the form of __________ basic elements.
Question 13 :
The state of matter which has no definite shape or volume is called<br><br>
Question 15 :
The state of matter with the least intermolecular forces of attraction is gaseous state.
Question 16 :
Water, milk, fruit juice, cold drinks are examples of which states of matter?
Question 19 :
The process by which molecules undergo a spontaneous transition from the liquid phase to the gaseous phase is called as:<br/>
Question 20 :
Change of a liquid into vapors at any temperature below its boiling point is called as ______________.
Question 23 :
The water, when left uncovered, gets converted into vapor due to:
Question 25 :
When we make tea, coffee or lemonade, particles of one type of matter get into the spaces between particles of the other. Why?
Question 26 :
_______ is the heat supplied during change of state of matter.
Question 27 :
Which of the following never forms a liquid at atmospheric pressure?
Question 30 :
Which of the following is not a property of particles of matter?
Question 32 :
Evaporation is a type of vaporization of a liquid that occurs from _________.
Question 33 :
Evaporation that occurs directly from the solid phase below the melting point is called as:
Question 34 :
__________ of ice is the energy which is used to change the state of ice to water.
Question 35 :
Drinking of hot tea from a saucer preferred to a cup, because:
Question 37 :
During summer season, water kept in an earthen pot becomes cool because of the phenomenon of :<br/>
Question 38 :
Rinku and Pinku had half day schools during summer. They used to go to school by auto. Observed that the auto driver covered the top of the auto by some mats which keeps the auto cool. Which of the following phenomenon is involved here?
Question 39 :
Evaporation of a liquid at room temperature leads to _________ on the liquid surface.<br/>
Question 40 :
Which one of the following factors do not affect the rate of evaporation?
Question 41 :
Burns caused by steam are more severe that burns caused by boiling water.
