
PRA UB 1
Authored by ZULFIKRI Moe
Education
11th Grade
Used 2+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Antara berikut manakah menerangkan tentang pengoksidaan?
Kehilangan oksigen
Nombor pengoksidaan berkurang
Penerimaan hidrogen
Mendermakan elektron
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Antara persamaan berikut yang manakah BUKAN tindak balas redoks?
2Mg + O2 --> 2MgO
Mg + 2HNO3 --> Mg(NO3)2 + H2
HCl + NaOH --> NaCl + H2O
PbO + H2 --> Pb + H2O
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Antara berikut yang manakah agen penurunan?
Larutan kalium iodida
Larutan kalium manganat(VII) berasid
Larutan ferum(III) sulfat
Air bromin
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Kirakan nombor pengoksidaan bagi Cl di dalam asid klorik, HClO3
-1
+5
+1
-4
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Antara logam berikut yang manakah bertindak sebagai terminal negatif sel kimia?
Argentum
Eo = +0.80 V
Magnesium
Eo = -2.38 V
Kuprum
Eo = +0.34 V
Stanum
Eo = -0.14 V
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Rajah menunjukkan eksperimen penyesaran halogen daripada larutan halidanya
Apakah larutan X yang boleh digunakan supaya penyesaran boleh berlaku dan apakah perubahan warna apabila ditambah larutan 1,1,1-trikloroetana?
X = Iodin
- Larutan tanpa warna terbentuk di lapisan bawah
X = Bromin
larutan warna ungu terbentuk di lapisan bawah
X= Klorin
-larutan warna perang terbentuk di lapisan bawah
X = Astatin
- Larutan warna biru terbentuk di lapisan bawah
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Rajah menunjukkan suatu elektrolisis
Manakah contoh larutan X yang digunakan jika mentol TIDAK menyala?
Asid etanoik glasial
Larutan natrium klorida
Leburan plumbum(II) iodida
Ammonia
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