In the extraction of aluminium from bauxite, cryolite is used to
In the extraction of aluminium from bauxite, cryolite is used to Options (a) decreases the boiling point of aluminium (b)…
7 years ago
Surface Chemistry and Isolation of Elements
Galena is an ore of
Galena is an ore of Options (a) Pb (b) Sn (c) Hg (d) Zn Correct Answer: PbExplanation:No explanation available. Be…
7 years ago
When the ore limestone is heated carbon dioxide is given off. This operation
When the ore limestone is heated carbon dioxide is given off. This operation in metallurgy is known as Options (a)…
7 years ago
Froath floataton proess is used for the concentration of
Froath floataton proess is used for the concentration of Options (a) amalgams (b) chloride ores (c) oxide ores (d) sulphide…
7 years ago
Cassiterite is concentrated by
Cassiterite is concentrated by Options (a) flustation (b) liquation (c) levigation (d) electromagnetic separation Correct Answer: levigation Explanation:No explanation available.…
7 years ago
Which one of the following is true in electrolytic refining
Which one of the following is true in electrolytic refining Options (a) Impure metal is made cathode (b) Impure metal…
7 years ago
Impurities present in the ore react to form a fusible substance known as
Impurities present in the ore react to form a fusible substance known as Options (a) flux (b) gangue (c) nugget…
7 years ago
Hydro-metallurgical process of extraction of metals is based on
Hydro-metallurgical process of extraction of metals is based on Options (a) Complex formation (b) Hydrolysis (c) Dehydration (d) dehydrogenation Correct…
7 years ago
Which metal is extracted by complexing with KCN
Which metal is extracted by complexing with KCN Options (a) Cu (b) Sn (c) Pb (d) Ag Correct Answer: AgExplanation:No…
7 years ago
Which one of the following is not a sulphide ore
Which one of the following is not a sulphide ore Options (a) Magnetic (b) Iron pyrites (c) Galena (d) Sphalerite…
7 years ago