
formatif akhir
Authored by emi awal
Chemistry
12th Grade
Used 4+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berikut ini yang merupakan faktor-faktor penyebab terjadinya korosi adalah …
Air dan oksigen
Oksigen dan tanah
Tanah dan minyak
Minyak dan larutan asam
Minyak dan air
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1Diketahui 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
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Perhatikan gambar proses korosi berikut!
Proses korosi yang berlangsung paling lambat adalah
1
2
3
4
5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
salah satu kelebihan pencegahan perkaratan pada besi dengan cara pengecatan adalah…
Tidak bisa rusak
Tidak mudah patah
Tidak mudah terbakar
mempunyai nilai estetika
Tidak mudah tergores.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
salah satu kelemahan pada cat berbahan dasar minyak adalah
Mudah terbakar
Mudah berkarat
Lengket
Mudah meleleh
Mudah patah
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika diketahui larutan A, B, C, D dan E berturut-turut mempunyai pH = 4, 6, 7, 8 dan 9, manakah dari larutan tersebut yang paling cepat menyebabkan perkaratan pada besi?
Larutan A
Larutan B
Larutan C
Larutan D
Larutan E
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pencegahan perkaratan menggunakan pelumuran oli atau minyak lebih cocok untuk benda …
Gear pada mesin motor
Pagar
Kompor
Kawat
Paku
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