Ujian 1 Kertas 1
Quiz
•
Chemistry
•
7th - 11th Grade
•
Hard
sha ibr
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Antara yang berikut, yang manakah berlaku tindak balas penurunan?
Menerima oksigen
Kehilangan hidrogen
Menerima elektron
Penambahan nombor pengoksidaan
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Apakah nombor pengoksidaan nitrogen dalam NH4Cl?
+1
+3
-1
-3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Antara berikut, yang manakah benar mengenai persamaan kimia seimbang di atas?
Hidrogen sulfida mengalami pengoksidaan dengan kehilangan hidrogen membentuk sulfur.
Gas klorin mengalami penurunan dengan penerimaan hidrogen membentuk asid hidroklorik.
Hidrogen sulfida ialah agen pengoksidaan.
Gas klorin ialah agen penurunan.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Antara berikut, yang manakah ialah tindak balas redoks?
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Antara berikut, bahan yang manakah boleh menukarkan ion ferum(III), Fe3+ kepada ion ferum(II), Fe2+?
Air bromin
Hidrogen sulfida
Air klorin
Larutan kalium manganat(VII) berasid.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Persamaan setengah bagi penurunan larutan kalium dikromat berasid(VI) ditunjukkan seperti di atas.
Apakah nilai x, y dan z?
x=12, y=7, z=6
x=12, y=6, z=7
x=14, y=7, z=6
x=14, y=6, z=7
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Persamaan ion di atas menunjukkan tindak balas antara air bromin dengan larutan ferum(II) sulfat.
Nyatakan perubahan nombor pengoksidaan bromin dalam tindak balas tersebut?
0 ke +1
0 ke +2
0 ke -1
0 ke -2
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