Korosi
Quiz
•
Chemistry
•
12th Grade
•
Practice Problem
•
Medium
Eliya Yusmiati
Used 4+ times
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10 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Besi dapat dicegah dari korosi dengan salah satu cara berikut, yaitu....
Dilapisi kromium
Dicelupkan dalam larutan garam
Dihubungkan dengan tembaga
Dilapisi aluminium
Dihubungkan dengan lempeng magnesium
2.
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
2H2O + 2e → H2 + 2OH–
Fe → Fe2+ + 2e
Fe2+ → Fe3+ + e
3.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
Faktor penyebab korosi / yang mempercepat korosi adalah sebagai berikut ....
Air dan kelembaban udara
Elektrolit
Permukaan logam yang tidak rata
Terbentuknya sel elektrokimia
Pelumuran dengan Oli atau Gemuk
4.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
Faktor penyebab korosi ada 2 yaitu faktor internal dan faktor eksternal, yang termasuk faktor internal adalah ....
kemurnian bahan
bentuk bahan
keberadaan zat kimia
struktur bahan
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Jelaskan apakah yang dimaksud dengan korosi galvanis?
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Jelaskan pengertian korosi atmosfer!
7.
OPEN ENDED QUESTION
3 mins • Ungraded
Jelaskan secara detail mengenai kerugian dan keuntungan proteksi katodik dengan anodatumbal!
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