Grade 12th pass7 grade science
When zinc carbonate is heated and cooled, the change(s) that are observed are:
(a)- Physical change
(b)- Nuclear change
(c)- First chemical and then physical change
(d)- First physical and then chemical change
When zinc carbonate is heated and cooled, the change(s) that are observed are:
(a)- Physical change
(b)- Nuclear change
(c)- First chemical and then physical change
(d)- First physical and then chemical change
