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Science CBSE Homework Assignments
Class 7
Acids, bases and salts
Acids
1.
Sources of acids and bases
Question:
5
m.
Match the substances in Column I with those in Column II.
Column I
Column II
(a).
Tartaric acid
unripe mangoes
ant's sting
soap
curd
lime water
(b).
Calcium hydroxide
ant's sting
unripe mangoes
curd
soap
lime water
(c).
Formic acid
lime water
soap
ant's sting
curd
unripe mangoes
(d).
Sodium hydroxide
ant's sting
soap
lime water
curd
unripe mangoes
(e).
Lactic acid
ant's sting
soap
lime water
curd
unripe mangoes
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