Extraction of Non-metals from Ores
Chemistry ⇒ Metals and Non-metals
Extraction of Non-metals from Ores starts at 10 and continues till grade 12.
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Describe the Frasch process for the extraction of sulphur.
Describe the main difference between the extraction of metals and non-metals from their ores.
Describe the process of extracting bromine from brine.
Describe the role of electrolysis in the extraction of chlorine from brine.
Describe the steps involved in the extraction of phosphorus from phosphate rock.
Explain why carbon is not used to extract non-metals from their ores.
Explain why electrolysis is suitable for extracting highly reactive non-metals.
Explain why the extraction of fluorine requires special apparatus.
In the extraction of phosphorus from phosphate rock, which chemical is used to treat the rock? (1) Sulphuric acid (2) Hydrochloric acid (3) Nitric acid (4) Sodium hydroxide
Which non-metal is extracted by the Frasch process? (1) Sulphur (2) Phosphorus (3) Chlorine (4) Iodine
Which non-metal is extracted from its ore by heating with sand and coke in an electric furnace? (1) Sulphur (2) Phosphorus (3) Chlorine (4) Nitrogen
Which non-metal is obtained by heating its ore in the presence of air? (1) Sulphur (2) Phosphorus (3) Carbon (4) Nitrogen
Fill in the blank: The main ore of chlorine is ________.
Fill in the blank: The main ore of fluorine is ________.
Fill in the blank: The main ore of phosphorus is ________.
Fill in the blank: The main source of bromine is ________.
State whether the following statement is true or false: Non-metals are generally extracted from their ores by reduction with carbon.
State whether the following statement is true or false: The extraction of non-metals from their ores is generally easier than that of metals.
State whether the following statement is true or false: The extraction of non-metals from their ores may involve both physical and chemical processes.
True or False: Electrolysis is used to extract non-metals that are highly reactive.
