alleryHeating a salt with conc. H2SO4 gives violet vapours and a violet sublimate. Which anion?
AIodide
BChloride
CBromide
DNitrate
Answer & Solution
Correct answer: A. Iodide
Iodides are oxidised to iodine, whose violet vapour sublimes on the cooler walls of the tube.
Keep practising Principles Related to Practical Chemistry
Browse all Principles Related to Practical Chemistry questions for NEET UG, or explore more Chemistry topics.
Related questions
At what temperature is aniline diazotised in the azo dye test?In the azo dye test, benzenediazonium chloride couples with beta-naphthol to give:How is the toxic carbylamine destroyed after the test?Which amines give the carbylamine test with chloroform and alcoholic KOH?A carboxylic acid warmed with ethanol and conc. H2SO4 gives a sweet smell due to:What is seen when a carboxylic acid is added to sodium hydrogencarbonate solution?After a Tollens' test, the silver mirror is removed by adding:What forms inside the test tube in a positive Tollens' test?