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Subject :NSO    Class : Class 5

Which of the following changes is different from the other three?

AOpening of the lid of a bottle jar on submerging in hot water.
BBreaking of telephone wires hung overhead on poles in cold weather.
CCracking of a thick-walled glass when hot water is poured into it rapidly.
DBuckling of railway lines.


Ans 1:

Class : Class 4
i dint understand anything

Ans 2:

Class : Class 5
got it b

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