Chemistry

Oxidation States and Oxides

334 Questions

Oxidation states represent the degree of oxidation of an atom in a chemical compound. This topic covers calculating valency, classifying oxides as acidic or basic, and understanding thermal decomposition. These concepts are frequently tested in chemistry sections across multiple competitive examination platforms.

calculating oxidation statesclassification of oxidesvalency determinationthermal decompositionstability of metal oxides

Oxidation States and Oxides Questions

Multiple choice

What is the name of the oxide that is commonly used as a pigment?

  1. Iron(II) oxide (FeO)

  2. Iron(III) oxide (Fe2O3)

  3. Chromium(III) oxide (Cr2O3)

  4. Titanium dioxide (TiO2)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Titanium dioxide (TiO2) is commonly used as a pigment because it is a white, opaque powder that can be used to create a variety of colors.

Multiple choice

Which of the following oxides is used in the production of semiconductors?

  1. Silicon dioxide (SiO2)

  2. Gallium arsenide (GaAs)

  3. Indium phosphide (InP)

  4. Cadmium telluride (CdTe)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Gallium arsenide (GaAs) is commonly used in the production of semiconductors because it is a compound semiconductor with a wide bandgap and high electron mobility.

Multiple choice

What is the name of the oxide that is commonly used as a catalyst?

  1. Vanadium(V) oxide (V2O5)

  2. Chromium(III) oxide (Cr2O3)

  3. Manganese(IV) oxide (MnO2)

  4. Nickel(II) oxide (NiO)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Vanadium(V) oxide (V2O5) is commonly used as a catalyst because it is a highly active and selective catalyst for a variety of reactions.

Multiple choice

What is the most common oxidation state for transition metals?

  1. +1

  2. +2

  3. +3

  4. +4
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The most common oxidation state for transition metals is +2.