Mock Test -10 Class - 7

                                                       Mock Test 

                                                           Physics

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1. Give reasons. [2*3=6]

i)  At what top of Mount Everest, water boils at around 72C

ii)  Water at sea level has a boiling point of 100C.

iii)  Mercury is used in clinical thermometers.

2. Write the difference between boiling and evaporation. [2]

3. Match the following [5]

       a) Thermal expansion                                  i) Electric iron

       b) Bimetallic strip                                       ii) Slow

      c) Boiling                                                    iii) Sensation of hotness & coldness

      d) Heat                                                        iv) Fast

      e) Evaporation                                            v) Expansion gaps in bridges

4.  Define   a) Linear Expansion  b) Thermal Expansion  [3]

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