Chemical change does not take place in case of
1 Souring of milk into curd
2 Rusting of iron in atmosphere
3 Burning of magnesium ribbon in air
4 emitting of light by a red hot platinum wire
Answer Posted / guest
(4) emitting of light by a red hot platinum wire
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hai i am koti reddy panta.studying 3rd mca.i failed in my degree. shell i consider those subjects as backlogs
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