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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
ant's sting
soap
curd
unripe mangoes
lime water
(b).
Calcium hydroxide
unripe mangoes
ant's sting
curd
lime water
soap
(c).
Formic acid
soap
unripe mangoes
ant's sting
lime water
curd
(d).
Sodium hydroxide
curd
lime water
soap
unripe mangoes
ant's sting
(e).
Lactic acid
curd
lime water
ant's sting
soap
unripe mangoes
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