
Quiz on Iron Rusting and Metal Corrosion
Quiz
•
Chemistry
•
3rd Grade
•
Hard
ROZITA Moe
FREE Resource
19 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apa proses yang berlaku apabila besi terdedah kepada oksigen dan air?
Berkarat
Oksidasi
Pengurangan
Penguapan
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apa yang berlaku apabila besi mengalami pengaratan?
Fe → Fe2+ + 2e-
Fe + O2 → FeO2
Fe2+ → Fe3+ + e-
O2 + 2H2O + 4e- → 4OH-
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apa tujuan larutan natrium hidroksida dalam eksperimen ini?
Untuk mengesan kehadiran ion Cu2+
Untuk mengesan kehadiran ion Fe3+
Untuk mencegah karat besi
Untuk meningkatkan kekonduksian air
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mengapa agar-agar digunakan dalam eksperimen ini daripada air?
Untuk mencegah penyejatan
Untuk menggumpal larutan
Untuk menyediakan nutrien kepada logam
Untuk meningkatkan suhu
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apakah hubungan antara keamatan warna biru dan kadar pengaratan besi?
Korelasi positif
Korelasi negatif
Tiada korelasi
Korelasi eksponen
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apa fungsi larutan kalium heksasianoferrat(III) dalam eksperimen ini?
Untuk mengesan kehadiran ion OH-
Untuk meningkatkan kekonduksian air
Untuk mencegah karat besi
Untuk mengesan kehadiran ion Fe2+
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Apa logam yang boleh mencegah karat besi apabila bersentuhan dengannya?
Alumunium
Magnesium
Zinc
Copper
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