
Remedial UH KD. 3.3 KELAS XII IPA 5

Quiz
•
Chemistry
•
12th Grade
•
Easy
Miati Ali
Used 7+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Korosi dari logam besi menghasilkan karat. Rumus kimia karat besi adalah…
FeO
Fe3O2
Fe2O3
Fe3O2.xH2O
Fe2O3.xH2O
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Prinsip pencegahan korosi dengan perlindungan katodik dalah ….
logam di katoda harus memiliki potensial reduksi lebih besar daripada logam di anoda
bahan yang dilindungi harus diletakkan di anoda
logam di anoda harus mudah direduksi
logam di katoda harus mudah dioksidasi
tidak perlu dilakukan
3.
MULTIPLE CHOICE QUESTION
5 mins • 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 ….
CO dan NO
O2 dan N2
SO2 dan NO2
H2O dan CO
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diketahui gambar percobaan tentang korosi besi berikut:
Catatan :
- Air mendidih mengandung lebih sedikit gas oksigen terlarut.
- Senyawa anhidrat mempunyai sifat mudah menyerap air.
Berdasarkan data tersebut urutan terbentuknya korosi dari yang paling cepat adalah .. . .
1 - 2 - 4 - 3
2 - 1 - 4 - 3
3 - 1 - 2 - 4
3 - 4 - 1 - 2
4 - 2 - 1 - 3
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Berdasarkan reaksi redoks pada proses perkaratan, lingkungan seperti apa yang menyebabkan besi mudah berkarat?
kering
lembab
vakum
berminyak
panas
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pada Teknik perlindungan katodik, logam besi yang dilindungi bertindak sebagai …
Katoda
Anoda
Elektrolit
Penghantar
Penyedia elektron
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pelapisan besi menggunakan plastik lebih cocok digunakan pada alat …
Alat rumah tangga
Onderdil sepeda motor
Kerangka jembatan
Alat memasak
Kerangka rumah
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