Chemistry

Chemical Nomenclature

67 Questions

Chemical nomenclature focuses on writing standard IUPAC names for organic and inorganic compounds. This topic is essential for chemistry sections across science exams. Regular practice helps in quickly identifying functional groups and structural priority.

organic compound naminginorganic compound namingIUPAC naming rulesfunctional groups

Chemical Nomenclature Questions

Multiple choice

Which one is the correct IUPAC name of the coordination compound? [Cr(NH₃)₃(H₂O)₃]Cl₃

  1. Triamminetriaquachromium(III) chloride

  2. Triamminetriaquachromium(II) chloride

  3. Triamminetriaquachromium(III) chlorine

  4. Triamminetriaquachromate(III) chloride
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The ligands are ammine and aqua, listed alphabetically. The metal is Chromium in the +3 oxidation state, and the complex is cationic, so it is named Chromium(III).

Multiple choice

What is the IUPAC name for the compound CH3CH2OH?

  1. Ethanol

  2. Propanol

  3. Butanol

  4. Pentanol
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The IUPAC name for the compound CH3CH2OH is ethanol. It is a two-carbon alcohol with the hydroxyl group (-OH) attached to the second carbon atom.

Multiple choice

What is the IUPAC name for the compound CH3CH2CH2CH2Br?

  1. 1-Bromobutane

  2. 2-Bromobutane

  3. 3-Bromobutane

  4. 4-Bromobutane
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The IUPAC name for the compound CH3CH2CH2CH2Br is 1-bromobutane. It is a four-carbon alkyl halide with the bromine atom attached to the first carbon atom.

Multiple choice

What is the name of the compound with the formula $CO_2$?

  1. Carbon dioxide

  2. Carbon monoxide

  3. Methane

  4. Ethane
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The compound with the formula $CO_2$ is called carbon dioxide, a colorless, odorless gas.

Multiple choice

What is the IUPAC name of the compound [Fe(CO)5]?

  1. Iron pentacarbonyl

  2. Pentacarbonyl iron

  3. Iron(II) pentacarbonyl

  4. Pentacarbonyl iron(0)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The IUPAC name of the compound [Fe(CO)5] is iron pentacarbonyl.

Multiple choice

What is the IUPAC name of silicon carbide?

  1. Silicon(IV) carbide

  2. Silicon carbide

  3. Silicon dicarbide

  4. Silicon tetracarbide
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The IUPAC name of silicon carbide is silicon(IV) carbide.

Multiple choice

What is the name of the compound with the formula CH4?

  1. Methane

  2. Ethane

  3. Propane

  4. Butane
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Methane has the chemical formula CH4 and is the simplest hydrocarbon, consisting of one carbon atom and four hydrogen atoms.