Kuiz Kimia Tingkatan 5 Bab 1 Set 3

SELAMAT DATANG Kuiz Kimia Tingkatan 5 Bab 1 Set 3

KUIZ INI MENGANDUNGI 10 SOALAN

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

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

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

None

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

It is the oxidizing agent.

It is the reducing agent.

It is the substance that is reduced

It is a spectator ion.

None

What is the correct IUPAC name for the compound Cu2O?

Copper oxide

Copper(II) oxide

Copper(I) oxide

Dicopper monoxide

None

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

It is the positive terminal where reduction occurs.

It is the positive terminal where oxidation occurs.

It is the negative terminal where reduction occurs.

It is the negative terminal where oxidation occurs.

None

Why is cryolite (Na3AlF6) added to aluminum oxide (Al2O3) during the industrial extraction of aluminum?

To prevent the carbon anodes from oxidizing

To increase the reactivity of aluminum

To lower the melting point of aluminum oxide.

To act as the main electrolyte for the process.

None

In the electrolysis of a DILUTE aqueous solution of copper(II) chloride (CuCl2) using inert electrodes, what is produced at the anode?

Copper metal

Oxygen gas

Hydrogen gas

Chlorine gas

None

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

Calcium carbonate (CaCO3)

Silicon dioxide (SiO2)

Carbon monoxide (CO)

Carbon dioxide (CO2)

None

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

A substance loses electrons

A substance loses hydrogen

A substance gains oxygen.

A substance gains hydrogen.

None

What is the primary function of a salt bridge in a Daniell cell?

To allow electrons to flow between the two half-cells

To act as the site of oxidation or reduction

To mix the two electrolyte solutions

To allow ions to flow between the half-cells to maintain electrical neutrality.

None

10.

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

Both cells convert chemical energy to electrical energy.

In an electrolytic cell, oxidation occurs at the cathode.

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

In both cells, the anode is the positive electrode

None

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