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Subject :NSO    Class : Class 6

Expansion on heating, contraction on cooling and change of state is

(A) Chemical change

(B) Permanent change

(C) Reversible change

(D) Irreversible change.

Ans 1:

from ,
Class :
C) reversible change

Ans 2:

from ,
Class :
c

Ans 3:

from ,
Class :
Reversible change

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