Home › Maharashtra SSC (Class 10) › Chemistry › Metallurgy › The froth floatation method of concentration is …
The froth floatation method of concentration is most suitable for which type of ore?
ACarbonate ores
BSulphide ores
COxide ores
DNitrate ores
Answer & Solution
Correct answer: B. Sulphide ores
1. Froth floatation uses hydrophobic and hydrophilic properties of particles.
2. Metal sulphide particles are hydrophobic and get wetted by oil, floating with the froth.
3. So this method concentrates sulphide ores such as zinc blende and copper pyrite.
4. Carbonate and oxide ores are not concentrated this way, so they are wrong choices.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 8 "Metallurgy", p.111_
Related questions
Germanium and silicon used as semiconductors are purified by zone refining becauseNickel is refined by heating the impure metal in a stream of CO to form a volatile carbonyFrom an Ellingham diagram at 1500 K, $\Delta G^\circ$ for $2Fe+O_2\rightarrow 2FeO$ is $-3From an Ellingham diagram, aluminium can reduce which of the following oxides?In an Ellingham diagram the line for the formation of carbon monoxide ($2C + O_2
ightarroAn Ellingham diagram is a plot ofIn the cyanide process, gold is recovered from the leached solution $[Au(CN)_2]^-$ by addiIn the electrolytic refining of copper, the anode and cathode are respectively