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Subjects
Science State Board
Class 7
Changes around us
Chemical changes
7.
Fermentation, periodic and non-periodic changes
Exercise condition:
6
m.
Match
the
following
:
Answer variants:
Baking soda with vinegar
Watch
Occurrence of day and night
Yeast
1
.
Fermentation
-
2
.
Neutralisation reaction
-
3
.
Periodic changes
-
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