Materi Korosi
Quiz
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Easy
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Korosi adalah
Penyepuhan
Perkaratan
Penggumpalan
Pengkikisan
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada peristiwa korosi, besi mengalami oksidasi, sedangkan yang mengalami reduksi adalah ….
H+
O2
Fe2+
OH–
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Rumus kimia karat besi adalah ….
Fe2O4.3H2O
Fe3O3.xH2O
Fe2O3.5H2O
Fe2O3.xH2O
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Faktor – faktor berikut menyebabkan korosi, kecuali ….
Minyak
pH
Suhu
Elektrolit
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada proses korosi besi, terjadi reaksi reduksi pada katoda dan oksidasi pada anoda yang melibatkan besi dan lingkungan disekitarnya. Reaksi yang terjadi pada anoda adalah ….
O2 + 4H+ + 4e → 2H2O
2H2O → O2 + 4H+ + 4e
Fe → Fe2+ + 2e
2H2O + 2e → H2 + 2OH–
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kapal yang berada di laut lebih cepat berkarat daripada kapal di sungai. faktor yang paling dominan mempengaruhi perkaratan pada kapal di laut adalah ….
Elektrolit
galvanic coupling
H2O
pH
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Logam-logam berikut yang paling mudah mengalami korosi adalah ….
Cu
Zn
Pt
Ag
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