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