ULANGAN HARIAN KOROSI

Quiz
•
Chemistry
•
12th Grade
•
Medium
anwar khairul
Used 50+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Faktor-faktor berikut yang mempengaruhi terjadinya korosi adalah ….
kelembaban udara
pemanasan
kualitas logam
pendinginan
waktu pemakaian
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Rumus kimia karat besi adalah ….
Fe2O4.3H2O
Fe3O3.xH2O
Fe2O3.5H2O
Fe2O3.xH2O
Fe2O3.5H2O
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pencegahan korosi yang paling tepat pada setang sepeda adalah....
Dihubungkan dengan magnesium
Dilapisi dengan krom
Dioles dengan oli / minyak goreng
Proteksi katodik
Dibuat paduan logam / alloy
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cara ini adalah cara perlindungan katodik atau perlindungan elektrokimia
Di daerah industri, gas-gas yang dapat menyebabkan korosi adalah …
O2 dan N2
CO dan H2O
CO dan N2
SO2 dan NO2
CO2 dan CO
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui :
Fe2+(aq) + 2e Fe(s) E0 = - 0,44 Volt
Ni2+(aq) + 2e Ni(s) E0 = - 0,25 Volt
Mg2+(aq) + 2e Mg(s) E0 = - 2,37 Volt
Cu2+(aq) + 2e Cu(s) E0 = + 0,34 Volt
Ag+(aq) + e Ag(s) E0 = + 0,80 Volt
Pb2+(aq) + 2e Pb(s) E0 = - 0,13 Volt
Logam yang dapat melindungi besi dari perkaratan dengan perlindungan katodik adalah . . . . .
Mg
Ni
Cu
Ag
Pb
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Salah satu cara mencegah terjadinya reaksi korosi pada menara adalah . . . .
Dilapisi timah
Di cat
Dibakar lalu ditempa
Dicelupkan pada larutan asam
Dihubungkan dengan lempeng magnesium
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Paku yang mengalami korosi paling cepat terjadi pada nomor...
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