Applications of Electrochemistry (Grade 12 NSC Matric Physical Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What makes fuel cells an important clean energy technology?
What makes fuel cells an important clean energy technology?
They produce electricity without combustion
Which is NOT a main use of electroplating?
Which is NOT a main use of electroplating?
Generating electrical current from metals
In copper electrowinning, what happens at the cathode?
In copper electrowinning, what happens at the cathode?
It increases in mass as pure Cu deposits
What is brine in the chloralkali industry?
What is brine in the chloralkali industry?
A saturated aqueous solution of NaCl
Which application uses sodium hydroxide (caustic soda)?
Which application uses sodium hydroxide (caustic soda)?
Making soap and cleaning agents
What is a major disadvantage of the mercury cell?
What is a major disadvantage of the mercury cell?
Mercury is toxic and expensive
What advantage does the diaphragm cell have over the mercury cell?
What advantage does the diaphragm cell have over the mercury cell?
It uses less energy
How does the membrane cell separate ions?
How does the membrane cell separate ions?
By charge: allows cations, blocks anions
Which chloralkali cell method uses the least electricity?
Which chloralkali cell method uses the least electricity?
Membrane cell
What is the role of cryolite in aluminium extraction?
What is the role of cryolite in aluminium extraction?
Lowers melting point and dissolves ore