SET 1:KESEIMBANGAN REDOKS

Quiz
•
Chemistry
•
1st - 12th Grade
•
Hard
MPDCA Sekolah Menengah
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Antara pernyataan berikut yang manakah benar tentang pengoksidaan dan penurunan?
Which of the following is true about oxidation and reduction?
Pengoksidaan :Menerima oksigen
oxidation :Gain of oxygen
Penurunan :Kehilangan hidrogen
reduction:Loss of hydrogen
Pengoksidaan :Kehilangan oksigen
Oxidation :Loss of oxygen
Penurunan :Menerima hidrogen
Reduction:Gain of hydrogen
Pengoksidaan :Kehilangan elektron
Oxidation :Loss of electrons
Penurunan :Menerima proton
Reduction:Gain of proton
Pengoksidaan :Pertambahan nombor pengoksidaan
Oxidation :Increase in oxidation number
Penurunan :Penurunan nombor pengoksidaan
Reduction:Decrease in oxidation number
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the oxidation number of hydrogen in sodium hydride, NaH?
Apakah nombor pengoksidaan bagi hidrogen dalam natrium hidrida, NaH?
+1
-1
+2
-2
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Apakah nombor pengoksidaan sulfur dalam K2S2O 8?
What is the oxidation number of sulphur in K2S2O 8?
-2
0
+7
+8
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Larutan yang mengandungi ion ferum(III), Fe3+ boleh ditukarkan ke ion ferum(II), Fe2+ dengan menambahkan serbuk zink.
Antara berikut yang manakah boleh menggantikan serbuk zink di dalam tindak balas ini?
Iron(III) ion, Fe3+ in solution can be converted into iron(II) ion, Fe2+ by adding zinc powder.
Which of the following can replace zinc powder in the reaction?
air bromin
Bromine water
Larutan kalium iodida
Potassium iodide solution
Larutan kalium heksasianoferrat (II)
Potassium hexacyanoferrate(II) solution
Larutan kalium manganat (VII) berasid
Acidified potassium manganate(VII) solution
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Persamaan berikut menunjukkan tindak balas antara hidrogen dan kuprum(II) oksida?
The following reaction shows the reaction between hydrogen and copper(II) oxide.
+ CuO + Cu
Pernyataan manakah benar mengenai tindak balas ini?
Which statement is true about this reaction?
Kuprum(II) oksida dioksidakan kepada zink
Copper(II) oxide is oxidized to zinc
Hidrogen ialah agen penurunan
Hydrogen is reducing agent
Nombor pengoksidaan hidrogen berkurang
The oxidation number of hydrogen decrease
Nombor pengoksidanan kuprum bertambah
The oxidation number of copper increase
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Apabila arus elektrik dialirkan menerusi leburan plumbum(II) bromida, wasap perang boleh diperhatikan di anod elektrod karbon. Apakah sebabnya?
When an electric current is flowed through molten lead(II) bromide, brown vapour can be seen on the anode of the carbon electrode. What is the reason?
plumbum terbentuk di anod.
Lead is formed at the anode.
Plumbum bertindak balas di anod karbon.
Lead reacts with bromine at the carbon anode.
Ion bromida melepaskan elektron di anod karbon untuk menghasilkan bromine.
Bromide ion loses electron at the carbon anode to produce bromine.
Plumbum (II) bromida bercerai kepada ion kalium dan ion bromida.
Lead (II) bromide ionises into potassium ions and bromide ions.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ion manakah yang terdapat dalam larutan akueus natrium klorida?
Which ions are present in aqueous solution sodium chloride?
Na+, Cl-
H+, OH-
Na+, Cl- , OH-
Na+, Cl-, H+, OH-
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