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Subject :NSO    Class : Class 8

If an apple is sliced and kept for some time, the exposed slices of the apple turn brown. Find the correct option for the type of change and idea for preventing the apple from turning brown.

APhysical change and dip in water
BChemical change and sprinkle salt
CPhysical change and dip in lime juice
DChemical change and dip in lemon juice


Ans 1:

Class : Class 6

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