Separation of mixture of solids by physical methods can be based on differences in the following except
Separation of mixture of solids by physical methods can be based on differences in the following except
Explanation
Public corporations are government-owned enterprises providing essential services. Examples: PHCN (power), NTA (broadcasting), NNPC (petroleum). Created by Act of parliament, funded by government.
Features: owned by government, controlled by appointed board, capital from government/loans, provides public services, may or may not make profit, answerable to government ministry.
Advantages: provides essential services, social welfare focus, prevents private monopoly. Disadvantages: often inefficient, political interference, bureaucracy, poor customer service, financial losses common.