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

  • question_answer
    The cover plate is removed from the gas jars shown in the diagram. After several days, the colour of the gas is the same in both jars. Why does this happen? Explain.

    Answer:

                    Diffusion has occurred in the jars. Bromine molecules move from a region where they are of higher concentration to region of lower concentration in the gas jar above. Oxygen molecules move from a region where they are of higher concentration to a region of lower concentration in the gas jar below. Diffusion continues until both gas jars have uniform distribution of bromine and oxygen molecules.                                                    


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