Question

Which option about the IUPAC is correct?

1. Its full form is the International Union of Pure and Applied Chemistry.
2. They started naming the compounds in 1948.

1. Option 1 is correct
2. Option 2 is correct
3. Both are correct
4. Both are incorrect

Answer 1

Correct Answer - Option 1 : Option 1 is correct

The correct answer is 1 i.e. Option 1 is correct.

Explanation:

• The organic compounds have two names: common name and official names (IUPAC names).
• The official names or systematic names of organic compounds were given by the International Union of Pure and Applied Chemistry in 1958, so they are called IUPAC names or IUPAC nomenclature.
• To name hydrocarbons by the IUPAC method, we should remember the following points :
  • The number of carbon atoms in a hydrocarbon is indicated by using the following stems:

    One carbon atom	Meth
    Two carbon atom	Eth
    Three carbon atom	Prop
    Four carbon atom	But
    Five carbon atom	Pent
    Six carbon atom	Hex
    Seven carbon atom	Hept
    Eight carbon atom	Oct
    Nine carbon atom	Non
    Ten carbon atom	Dec

• A saturated hydrocarbon containing a single bond is indicated by writing the word 'ane' after the stem.
• An unsaturated hydrocarbon containing a double bond is indicated by writing the word 'ene' after the stem.
• An unsaturated hydrocarbon containing a triple bond is indicated by writing the word 'yne' after the stem.