Sulphide ore is added to a tank containing oil and water

State one relevant observation: Sulphide ore is added to a tank containing oil and water, and then stirred or agitated with air.

Answer

Froth / foam is produced / lather is seen / bubbles are seen / ore floats / particles are seen floating / lighter particles float / heavy particles sink / gangue or matrix sink / mud or soil sinks.

• Exam Year: 2020