2. Questions Bank
  3. 9th Class
  4. Science
  5. Matter in Our Surroundings

9th Class Science Matter in Our Surroundings Question Bank 9th CBSE Science Matter in Our Surroundings

  • question_answer
    (i) What determine the state of a substance? (ii) Convert 30°C into Kelvin. (iii) Water droplets are observed on the outer surface of a glass tumbler containing ice cold water. Give reason.

    Answer:

                                                (i) Temperature and pressure determine the state of substance.                                           (ii) 30°C = 273 + 30 = 303 K                            (iii) Water droplets are observed on glass tumbler because water vapours get condensed on the cold surface of the glass.


You need to login to perform this action.
You will be redirected in 3 sec spinner