Question Text
Question 1 :
Inside human body ,which of the following is responsible for heat transfer,
Question 2 :
If we keep pop corn in a pressure cooker on a flame, heat is transferred from flame to corn by :
Question 4 :
Thermoflasks and doors of refrigerators have two layered structure with an insulator in between so as:
Question 5 :
In experiment of convection heat transfer water inside the pipe, completely gets heated (with the application of heat source) can be explained best by which of the following statements,
Question 7 :
Water cannot be used as a liquid in a thermometer because it has:
Question 8 :
Assertion: Two thin blankets put together are warmer than a single blanket of double the thickness.
Reason: Thickness increases because of air layer enclosed between the two blankets.
Question 10 :
Choose the wrong statement when we measure the temperature of a water kept in a beaker:
Question 13 :
State whether given statement is True or FalseVentilation is an example of convection current in gases. 
Question 16 :
Which one of the following sources of energy you recommend to use?<br>A source of energy having an input energy .................... J and an output energy .................... J.<br>
Question 20 :
Iron glows in red colour when it is heated to very high temperature. The reason for this is :<br/>
Question 22 :
Write 'true' or 'false' for each statement: On touching a lump of ice, we feel cold because some heat passes from our body to the ice. <br>
Question 24 :
In experiment of convection heat transfer, water inside the pipe can be convectively heated with higher rate by
Question 25 :
The freezer in a refrigerator is fitted near the top :
