Chemistry

Chemical Nomenclature

95 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 biology chemical coordination in plants cytokinins plant hormones plants and animal hormones

6-(4-Hydroxy-3 Methyl-trans-2-butenylamine) purine is also called

  1. Methyl jasmonate

  2. Zeatin

  3. Brasinolide

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

A 6-(4-Hydroxy-3 Methyl-trans-2-butenylamine) purine is a chemical name of trans zeatin. It is a type of cytokinin, plant hormone. It was first found in Zea maize. It stimulates the cell division process in plants. It acts as plant growth regulator.

Thus, the correct answer is option B.

Multiple choice chemistry metals physical properties of metals and non-metals some physical properties of metals general characteristics and uses of metals

Which of the following compounds is known as sugar of lead?

  1. $PbSO _4$
  2. $PbCO _3$
  3. $(CH _3COO) _2Pb$
  4. $PbCl _2$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Lead (II)acetate also known as sugar of lead,salt of saturn and Goulard's powder is a white crystalline chemical compound with a sweetish taste. It is made by treating lead ($II$) oxide with acetic acid.

Multiple choice chemistry nitrogen and sulfur ammonia-properties and uses ammonia compounds of nitrogen - ammonia

The formula of Ammonium Sulphate is:

  1. $N{H} _{4}S{O} _{4}$
  2. ${(N{H} _{4})} _{2}S{O} _{4}$
  3. $N{H} _{4}{(S{O} _{4})} _{2}$
  4. $N{H} _{2}{(S{O} _{4})} _{2}$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ammonium sulfate is made by treating ammonia, often as a by-product from coke oven, with sulfuric acid: 

$2 NH _3$ + $H _2SO _4 \rightarrow$   $(NH _4) _2SO _4$
Option "B" is correct.

Multiple choice

Iron

  1. In

  2. Ir

  3. Fe

  4. Fn
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Iron is represented by the chemical symbol Fe, which is derived from the Latin word ferrum. In is the symbol for indium, Ir is for iridium, and Fn is not a valid element symbol.

Multiple choice

Potassium

  1. K

  2. Po

  3. Pt

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

Potassium is represented by the chemical symbol K, which comes from the neo-Latin word kalium. Po is the symbol for polonium, Pt is for platinum, and Pm is for promethium.

Multiple choice

Magnesium

  1. Mg

  2. Md

  3. Mn

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

Magnesium is represented by the chemical symbol Mg. Md is the symbol for mendelevium, Mn is for manganese, and Ma is not a valid element symbol.

Multiple choice

Ca3P2

  1. tricalcium diphosphide

  2. calcium (II) phosphide

  3. calcium phosphide

  4. calcium (III) phosphide
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ca3P2 is an ionic compound. Since calcium always forms a 2+ ion, we do not need Roman numerals in the name. It is simply calcium phosphide.

Multiple choice

lead (II) fluoride

  1. PbF2

  2. Pb2F

  3. Pb2F2

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

Lead (II) indicates a Pb(2+) ion. Fluoride is F(1-). To balance the charges, two fluoride ions are required for each lead ion, resulting in PbF2.

Multiple choice IUPAC Ligands Coordination compound

Which one of the following is the correct IUPAC name of the given coordination compound?

[Co(en)₃]³+

  1. tris(ethane-1,2-diamine) Cobaltate(III)

  2. tris(ethane-1,2-diamine) Cobalt(III) ion

  3. tri(ethane-1,2-diamine) Cobalt(III) ion

  4. tris(ethane-1,3-diamine) Cobalt (III) ion
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The ligand ethane-1,2-diamine is a neutral bidentate ligand. Since there are three of them, the prefix 'tris' is used, and the complex is a cation, so the metal name remains Cobalt.

Multiple choice IUPAC Ligands Coordination compound Polydentate

Which one of the following is the correct IUPAC name of the given coordination compound? [Pt(NH₃)₂Cl(NH₂CH₃)]Cl

  1. Diamminechloridomethylammineplatinum(II)

  2. Diamminechloridomethylammineplatinum(I)

  3. Diamminemethylamminechloridoplatinum(I)

  4. Methylamminediamminechloridoplatinum(I)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

According to IUPAC nomenclature rules for coordination compounds, ligands are named alphabetically before the metal atom. The ligands are diammine (from NH3), chlorido (from Cl-), and methylammine (from CH3NH2). Alphabetical order gives ammine before chlorido, then methylammine. Thus, the name is Diamminechloridomethylammineplatinum(II).

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.