Question

8. A, B and C are the components of air. Gases
A and B dissolve in water while gas C does
not dissolve in water. Gas A dissolved in water
is used by aquatic animals in photosynthesis
and
gas B is used by aquatic animals for
respiration. Gas C is the major component of
air. Identify the gases A, B and C.

9. Monika has three solids A, B and C and two
liquids X and Y.Solid A floats on liquid X
but sinks in liquid Y. Solid B sinks in both
the liquids. Solid C sinks in both the liquids.
Which of the solids out of A, B and C has
the minimum density and which solid has
maximum density. Explain.

10. Why does ice float on water?​

Answer 1

Answer:Gas B: oxygen

Gas C:nitrogen

Answer 2

Answer:

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