Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
Practical Chemistry

NTA Abhyas 2020 · Chemistry · Practical Chemistry

Sodium fusion extract of an organic compound gives a blood red...

Sodium fusion extract of an organic compound gives a blood red colouration with few drops of {\text{FeCl}_{3} solution. This indicates the presence of

Options

  1. ANitrogen in the organic compound
  2. BSulphur in the organic compound
  3. CNitrogen and sulphur in the organic compound
  4. DSulphur and chlorine in the organic compound

Correct answer

C. Nitrogen and sulphur in the organic compound

Step-by-step solution

The presence of both nitrogen and sulphur in the lassaigne's test in an organic compound shows a blood red colouration with FeCl3{FeCl}_{3} solution. This is due to the formation of NaCNS in the sodium fusion extract.
Practice Practical Chemistry on Quantrex Academy →

More from Practical Chemistry

Passage: Consider the following reaction sequence in which J , K , L and M are the major… JEE Advanced 2026Among Fe^ 3+ , Pb^ 2+ , Cu^ 2+ and Mn^ 2+ , identify the one that gets precipitated out… JEE Main 2026Among Fe^ 2+ , Fe^ 3+ , Cr^ 2+ and Zn^ 2+ , the ion that shows positive borax bead test… JEE Main 2026A salt with few drops of conc. HCl gives apple green colour in flame test. The group… JEE Main 2026A student has been given 0.314 g of an organic compound and asked to estimate Sulphur.… JEE Main 2026In the Group analysis of cations, Ba^ 2+ ~\&~ Ca^ 2+ are precipitated respectively as JEE Main 2026Consider three metal chlorides x, y and z, where x is water soluble at room temperature… JEE Main 2026By usual analysis, 1.00 g of compound (X) gave 1.79 g of magnesium pyrophosphate. The… JEE Main 2026 Full Practical Chemistry list All NTA Abhyas JEE Main PYQs