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Subjects
Science State Board
Class 8
Acids and bases
Textbook questions
5.
Fill in the blanks I
Exercise condition:
4
m.
1
.
Benzoic acids are used for
removing stains
wasing cloths
food preservation
.
2
.
The word sour refers to
acere
acer
acure
in Latin
.
3
.
Bases are
bitter
sweet
sour
in taste
.
4
.
Chemical formula of calcium oxide is
\(CaO\)
\(CaOH\)
\(CaO_2\)
\(Ca_2O\)
.
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