question_answer

  Take a test tube of good quality glass material and put a amount of water in it. Place a stop cork at the mouth of it. Now suspend the test tube horizontally by two strings or wires as shown in the figure. Heat the test tube with a burner until water vaporizes and the cork blows out. Write any two of your observations.

Answer:

  (i) Water converts into steam. (ii) Steam exacts force on the cork and causes it to open.                                                                              (1 x 2)