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Subjects
Science CBSE
Class 10
Metals and non-metals
The extraction, classification and properties
1.
Reactivity and Metal occurrence: select the correct answer
Exercise condition:
2
m.
1
.
Potassium
Platinum
Calcium
can be found in the free state.
2
.
A metal mostly found as oxide, sulphide, or carbonate is
lead
gold
silver
.
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