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In Lassaigne’s test a violet colour obtained indicates the presence of
Options
(a) nitrogen
(b) sulphur
(c) halogen
(d) none of the above
Correct Answer:
sulphur
Explanation:
S + 2Na → Na₂S. Na₂S + Na₂[Fe(NO)(CN)₅] (Sodium nitroprusside) → Na₄[Fe(CN)₅NOS] (violet or purple colour).
Related Questions: - How much copper is supposed to be deposited when a current of 0.75 amperes
- If N and S both are present in an organic compound then during Lassaigne’s test,
- According to MO theory which of the following lists ranks the nitrogen species
- Alkyl halides can be converted into alcohol in a single step reaction.
- For an endothermic reaction, energy of activation is Ea and enthalpy of reaction
Topics: Basic Principles of Organic Chemistry
(124)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- How much copper is supposed to be deposited when a current of 0.75 amperes
- If N and S both are present in an organic compound then during Lassaigne’s test,
- According to MO theory which of the following lists ranks the nitrogen species
- Alkyl halides can be converted into alcohol in a single step reaction.
- For an endothermic reaction, energy of activation is Ea and enthalpy of reaction
Topics: Basic Principles of Organic Chemistry (124)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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