Presence of nitrogen in organic compounds is tested as__________?
Correct answer: C. CN‾
- A. Nitrogen gas
- B. NH3
- C. CN‾
- D. NO
Explanation
In Lassaigne's sodium-fusion test, nitrogen in an organic compound is converted into sodium cyanide, NaCN. On ionisation, this provides the cyanide ion, CN-, which is the species tested in the qualitative analysis. The likely distractor is NH3, option b, because students may confuse nitrogen detection with the ammonia test used for some other elements.
Last updated
About Functional Groups
Functional groups are specific atoms or atom groups that determine the characteristic reactions and properties of organic compounds. Coverage includes alkenes, alkynes, halo, hydroxyl, ether, carbonyl, carboxyl, ester, amino and nitro groups, together with their structures, nomenclature and related homologous series.
Practise Fundamental Principles of Organic Chemistry
536 free Fundamental Principles of Organic Chemistry MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A single atom or group of atoms which gives characteristic properties to a compound is called_________________?
Ammonium cynanate was 1st Inorganic compound that was converted into an Organic compound (in Lab) through boiling water. The organic compound was____.
An atom or a group of atoms or a double bond or triple bond whose presence imparts specific properties to organic compounds is called a functional group, because they are the chemically functional parts of molecules. Which of the following is functional group of carboxylic acid?
An atom or group of atom that gives specific properties to the compound is called as_?
An atom or group of atoms that give specific properties to the compound is/are called as _.