Detection of Elements — Prelims Questions
Which of the following statements is INCORRECT regarding the detection of elements in organic compounds?
An organic compound containing nitrogen gives a deep blue coloration with freshly prepared ferrous sulfate solution, ferric chloride solution, and dilute HCl. This confirms the presence of nitrogen. The blue color is due to the formation of:
Which of the following organic compounds will give a blood-red coloration with solution after sodium fusion?
Which of the following silver halides is insoluble in ammonium hydroxide solution?
An organic compound is heated with concentrated nitric acid and then treated with ammonium molybdate solution, resulting in a canary yellow precipitate. This indicates the presence of:
During the sodium fusion test for sulfur, if the Lassaigne's extract is treated with sodium nitroprusside solution, a violet color is observed. The chemical formula of the complex responsible for this violet color is: