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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: - The oxyacid of phosphorus, in which phosphorus has the lowest oxidation state, is
- Nitrous oxide is known as
- The IUPAC name of the compound having the formula CCl₃CH₂CHO is
- The acidic, basic or amphoteric nature of Mn₂O₇, V₂O₅ and CrO are respectively
- Benzoic acid,when heated with soda lime yields
Topics: Basic Principles of Organic Chemistry
(124)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The oxyacid of phosphorus, in which phosphorus has the lowest oxidation state, is
- Nitrous oxide is known as
- The IUPAC name of the compound having the formula CCl₃CH₂CHO is
- The acidic, basic or amphoteric nature of Mn₂O₇, V₂O₅ and CrO are respectively
- Benzoic acid,when heated with soda lime yields
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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