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Subjects
Science CBSE
Class 7
Physical and chemical changes
Textbook questions
19.
NCERT Exemplar IV
Exercise condition:
2
m.
1.
Galvanisation is a process used to prevent the rusting of which of the following?
Copper
Zinc
Aluminium
Iron
2.
Paheli’s mother made a concentrated sugar syrup by dissolving sugar in hot water. On cooling, crystals of sugar got separated. This indicates a -
Chemical change that can be reversed
Physical change that can be reversed
Physical change that cannot be reversed
Chemical change that cannot be reversed
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