9th Class Science Sample Paper Sample Paper - 1 Term - 1

  • question_answer (i) What happens to the temperature of water, when it boils? (ii) At 0°C or 273 K, what is the physical state of water?  

    Answer:

    (i) The temperature of water remains the same, because it remains constant at boiling point.                                     (1) (ii) Both solid and liquid, because both solid and liquid coexist at melting point.                                                                  (1)  


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