Kuiz Kimia Tingkatan 5 Bab 1 Set 3

SELAMAT DATANG Kuiz Kimia Tingkatan 5 Bab 1 Set 3

KUIZ INI MENGANDUNGI 10 SOALAN

Which of the following defines an oxidation reaction in terms of hydrogen transfer?

A substance loses electrons

A substance gains hydrogen.

A substance loses hydrogen

A substance gains oxygen.

None

What is the correct IUPAC name for the compound Cu2O?

Copper oxide

Copper(I) oxide

Dicopper monoxide

Copper(II) oxide

None

If you want to electroplate a steel key with silver, which of the following setups is correct?

The key is the cathode, a silver bar is the anode, and the electrolyte is silver nitrate.

The key is the cathode, a silver bar is the anode, and the electrolyte is sodium chloride.

The key is the anode, a carbon rod is the cathode, and the electrolyte is silver nitrate.

The key is the anode, a silver bar is the cathode, and the electrolyte is silver nitrate.

None

Which statement correctly compares a chemical cell and an electrolytic cell?

A chemical cell involves a spontaneous redox reaction, while an electrolytic cell involves a non-spontaneous one.

Both cells convert chemical energy to electrical energy.

In both cells, the anode is the positive electrode

In an electrolytic cell, oxidation occurs at the cathode.

None

Which of these halogens is the strongest oxidizing agent?

Bromine (Br2)

Iodine (I2)

Chlorine (Cl2)

Astatine (At2)

None

In the reaction Zn(p)+CuSO4(ak)→ZnSO4(ak)+ Cu(p), what is the role of the zinc metal, Zn?

It is the reducing agent.

It is a spectator ion.

It is the substance that is reduced

It is the oxidizing agent.

None

The process of purifying impure copper via electrolysis involves setting up a cell. How are the electrodes and electrolyte arranged?

Anode: Impure copper; Cathode: Pure copper; Electrolyte: CuSO4(ak)

Anode: Carbon; Cathode: Impure copper; Electrolyte: CuSO4(ak)

Anode: Impure copper; Cathode: Pure copper; Electrolyte: NaCl(ak)

Anode: Pure copper; Cathode: Impure copper; Electrolyte: CuSO4(ak)

None

In the context of rusting, sacrificial protection involves connecting iron to another metal. For this to work, the other metal must be:

the same electropositivity as iron.

a very good electrical insulator

less electropositive (less reactive) than iron.

more electropositive (more reactive) than iron

None

In the blast furnace, what is the main reducing agent that converts iron(III) oxide to molten iron?

Carbon dioxide (CO2)

Calcium carbonate (CaCO3)

Carbon monoxide (CO)

Silicon dioxide (SiO2)

None

10.

According to the principles of a chemical cell, which statement accurately describes the anode?

It is the negative terminal where oxidation occurs.

It is the negative terminal where reduction occurs.

It is the positive terminal where reduction occurs.

It is the positive terminal where oxidation occurs.

None

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