WorksheetsTOPICAL TEST REDOX
Total questions: 15
Worksheet time: 25mins
What is the meaning of a redox reaction?
Apakah maksud tindak balas redoks?
Reduction reaction involved gain of electron.
Tindak balas penurunan melibatkan penerimaan elektron.
Oxidation reaction involved loss of electron.
Tindak balas pengoksidaan melibatkan kehilangan elektron.
Both oxidation and reduction reaction occurred simultaneously
Kedua-dua tindakbalas penurunan dan pengoksidaan yang berlaku serentak.
A reaction involved gaining electron and losing hydrogen.
Tindak balas melibatkan penerimaan elektron dan kehilangan hidrogen.
Which of the following statements refer to oxidation?
Pernyataan yang manakah merujuk kepada pengoksidaan?
I Process of losing oxygen
Proses kehilangan oksigen
II Process of gaining hydrogen
Proses penerimaan hidrogen
III Process of losing electrons
Proses kehilangan elektron
IV Process of increasing oxidation number
Proses penambahan nombor pengoksidaan
I and II only
III and IV only
I, II and III only
I, II , III and IV
Which of the following is a redox reaction?
Antara berikut yang manakah tindak balas redoks?
Na2O + H2O → 2NaOH
NaOH + HCl → NaCl + H2O
2Na + 2H2O → 2NaOH + H2
NaCl + AgNO3 → AgCl + NaNO3
The ionic equation shows a redox reaction.
Persamaan ion berikut menunjukkan tindak balas redoks.
P (s) + Q2+(aq) → P2+ (aq) + Q (s)
Which of the following statement is true?
Manakah antara pernyataan berikut adalah benar?
Q2+ is oxidized.
Q2+ dioksidakan
P donates electrons
P menderma elektron
P is an oxidizing agent
P adalah agen pengoksidaan
Q2+ is a reducing agent
Q2+ adalah agen penurunan
Which of the following represents the oxidation number of nitrogen in the various oxides of nitrogen?
Manakah antara berikut dapat mewakili nombor pengoksidaan bagi nitrogen di dalam pelbagai oksida nitrogen?
A
B
C
D
What is the oxidation number of X in X2O32- ion?
Apakah nombor pengoksidaan bagi X dalam ion X2O32- ?
+2
+4
-2
-4
What are halogens X, Y and Z?
Apakah halogen X, Y dan Z?
A
B
C
D
Fe3+ ion in solution can be converted to Fe2+ ions by adding zinc powder. Which of the following can replace zinc powder in this reaction?
Ion Fe3+dalam larutan boleh ditukarkan kepada ion Fe2+ dengan menambahkan serbuk zink. Antara berikut, yang manakah boleh menggantikan serbuk zink di dalam tindak balas ini?
Bromine water
Air Bromin
Potassium iodide solution
Larutan kalium iodida
Potassium hexacynaferrate(II) solution
Larutan kalium heksasianoferat (II)
Acidified potassium manganate (VII) solution
Larutan kalium manganat (VII) berasid
The following equation shows the redox reaction between copper and silver nitrate solution.
Persamaan berikut menunjukkan tindak balas redok antara kuprum dengan larutan argentum nitrat.
Cu + 2AgNO3 → Cu(NO3)2 + 2Ag
Which of the following statements is true about this reaction?
Antara pernyataan berikut, yang manakah benar mengenai tindak balas ini?
Silver ion is oxidized
Ion argentum dioksidakan
Copper is the oxidizing agent
Kuprum adalah agen pengoksidaan
The oxidation number of copper increases
Nombor pengoksidaan kuprum bertambah
The oxidation number of nitrogen decreases
Nombor pengoksidaan nitrogen berkurang
The figure shows a chemical cell
Rajah menunjukkan satu sel kimia.
The reaction that occurs is given by the equation:
Tindak balas yang berlaku ditunjukkan melalui persamaan berikut :
Zn (s) + CuSO4 (aq) → ZnSO4 (aq) + Cu (s)
Which of the following is correct about the cell?
Manakah antara berikut adalah benar tentang sel tersebut?
Hydrogen gas is produced.
Gas hidrogen terhasil
Zinc is oxidized to zinc ion, Zn2+
Zink dioksidakan kepada ion zink, Zn2+
Copper is oxidized to copper(II) ion, Cu2+
Kuprum dioksidakan kepada ion kuprum, Cu2+
Electrons flow from the copper plate to the zinc plate.
Elektron bergerak daripada plat kuprum kepada plat zink
Diagram shows the set up of the apparatus of an experiment to investigate the transfer of electrons at a distance. Solution X is an oxidising agent and turns colour from purple to colourless after a few minutes reacted.
Rajah menunjukkan susunan radas eksperimen bagi mengkaji pemindahan elektron pada satu jarak. Larutan X ialah agen pengoksidaan dan bertukar warna dari ungu kepada tidak berwarna selepas beberapa minit bertindak balas.
Which of the following is the suitable name of solution X?
Antara berikut yang manakah nama yang sesuai untuk larutan X?
Iodine solution
Larutan iodin
Potassium hexacyanoferrate (III) solution
Larutan kalium heksasianoferat (III)
Acidified potassium dichromate (VI) solution
Larutan kalium dikromat (VI) berasid
Acidified potassium manganate (VII) solution
Larutan kalium manganat (VIII) berasid
Diagram shows the set up of apparatus for the experiment to investigate the transfer of electron at a distance.
Rajah menunjukkan susunan radas bagi eksperimen mengkaji pemindahan elektron pada suatu jarak.
Which direction will the electrons flow?
Ke arah manakah elektron mengalir ?
From electrode N to electrode M through the galvanometer
Dari elektrod N ke elektrod M melalui galvanometer
From electrode M to electrode N through the galvanometer
Dari elektrod M ke elektrod N melalui galvanometer
From electrode M to electrode N through dilute sulphuric acid
Dari elektrod M ke elektrod N melalui larutan asid sulfurik cair
From electrode N to electrode M through dilute sulphuric acid
Dari elektrod N ke elektrod M melalui larutan asid sulfurik cair
Diagram shows the results of an experiment to investigate the effect of other metals on the rusting of iron. The iron nail is put into test tube that contain hot jelly which added with potassium hexacyanoferrate (III) solution and phenolphtalein and put aside for 1 day.
Gambarajah menunjukkan keputusan satu eksperimen untuk mengkaji kesan logam lain ke atas pengaratan besi. Paku besi tersebut diletakkan di dalam tabung uji yang mengandungi agar-agar panas yang ditambahkan dengan larutan kalium heksasianoferat (III) dan fenolftalein dan dibiarkan selama 1 hari.
Based on the result in the diagram, arrange iron, X and Y in order of increasing electropositivity.
Berdasarkan keputusan di dalam rajah tersebut, susun besi (Ferum), X dan Y mengikut turutan menaik keelektropositifannya.
X, iron, Y
X, Ferum, Y
Y, iron, X
Y, Ferum, X
Iron, X, Y
Ferum, X, Y
Iron, Y, X
Ferum, Y, X
Diagram shows rusting process that occur naturally with the present of water and oxygen gas.
Rajah menunjukkan proses pengaratan besi secara semulajadi dengan kehadiran air dan gas oksigen.
Which of the following is the correct half equation that occur at the cathode?
Antara berikut, yang manakah setengah persamaan yang betul yang berlaku di katod?
Fe → Fe2+ + e
Fe3+ + e → Fe2+
4OH- → 2H2O + O2 + 4e
2H2O + O2 + 4e → 4OH-
Which of the following is correct when a mixture of carbon and copper(II) oxide is heated strongly?
Antara yang berikut, yang manakah benar apabila satu campuran karbon dengan kuprum(II) oksida di panaskan dengan kuat?
I the oxide ion loses two electrons
Ion oksida melepaskan dua elektron
II the oxidation number of carbon increases from 0 to +4
nombor pengoksidaan karbon bertambah dari 0 kepada +4
III the copper(II) oxide acts as the reducing agent
Kuprum(II) oksida bertindak sebagai agen penurunan
IV the copper(II) ion accepts two electrons
Ion kuprum(II) terima dua elektron
I and III
II and IV
II, III and IV
I, II, III and IV
