alleryMost reactive metals do not occur free in nature but are found mainly in which form?
AAs liquid droplets within rock cavities
BAs pure shining lumps of free metal
CAs combined salts like oxides and sulphides
DAs pure metallic gases in the air
Answer & Solution
Correct answer: C. As combined salts like oxides and sulphides
1. Most metals are reactive and combine with other elements over time.
2. Hence they occur in combined state as oxides, carbonates, sulphides and nitrates.
3. Only very unreactive metals like gold and platinum occur free.
4. Since reactive metals are combined, the free-lump option is wrong.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 8 "Metallurgy", p.108_
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