Quiz 1 (Faktor Korosi)
Quiz
•
Education
•
University
•
Hard
PKA21_004_Merynke Tiana
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Faktor-faktor berikut yang mepengaruhi terjadinya korosi adalah ….
Pemanasan
Kelembapan udara
Kualitas logam
Pendinginan
Waktu pemakaian
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 • 1 pt
Faktor – faktor berikut menyebabkan korosi, kecuali ….
Suhu
Minyak
pH
Elektrolit
H2O
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Di daerah industri, udara dapat mengandung gas-gas SO2, CO2, NO2, O2, N2, dan CO2. Pasangan gas-gas yang dapat menyebabkan terjadinya korosi adalah ….
SO2 dan NO2
CO dan NO
O2 dan N2
H2O dan CO
CO2 dan CO
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mudah atau tidaknya logam berkarat tergantung pada ….
Banyaknya air
Tingkat kebebasan
Banykanya oksigen
Keaktifan logam
Suhu lingkungan
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada peristiwa korosi, besi mengalami oksidasi, sedangkan yang mengalami reduksi adalah ….
H+
Fe2+
O2
OH–
H2O
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Paku yang mengalami korosi paling cepat terjadi pada nomor …
1
2
3
4
5
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