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 these halogens is the strongest oxidizing agent?

Bromine (Br2)

Astatine (At2)

Iodine (I2)

Chlorine (Cl2)

None

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

It is the positive terminal where oxidation occurs.

It is the positive terminal where reduction occurs.

It is the negative terminal where oxidation occurs.

It is the negative terminal where reduction occurs.

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

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

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

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

Chlorine gas

Hydrogen gas

Oxygen gas

None

What is the correct IUPAC name for the compound Cu2O?

Dicopper monoxide

Copper(I) oxide

Copper oxide

Copper(II) oxide

None

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

A substance gains oxygen.

A substance loses electrons

A substance loses hydrogen

A substance gains hydrogen.

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 oxidizing agent.

It is the substance that is reduced

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.

In both cells, the anode is the positive electrode

Both cells convert chemical energy to electrical energy.

In an electrolytic cell, oxidation occurs at the cathode.

None

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

Silicon dioxide (SiO2)

Carbon dioxide (CO2)

Calcium carbonate (CaCO3)

Carbon monoxide (CO)

None

10.

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

To lower the melting point of aluminum oxide.

To prevent the carbon anodes from oxidizing

To act as the main electrolyte for the process.

To increase the reactivity of aluminum

None

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