| ⇦ | 
| ⇨ |
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: - Calculate the energy in joule corresponding to light of wavelength 45nm
- Number of σ and π- bonds in acetylene is
- 10 g of hydrogen and 64 g of oxygen were filled in a steel vessel and exploded
- Copper occurs naturally as Cu-63 and Cu-65. Given Atomic Weight
- A 5 molar solution of H₂SO₄ is diluted from 1 liter to a volume of 10 litres
Topics: Basic Principles of Organic Chemistry
(124)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Calculate the energy in joule corresponding to light of wavelength 45nm
- Number of σ and π- bonds in acetylene is
- 10 g of hydrogen and 64 g of oxygen were filled in a steel vessel and exploded
- Copper occurs naturally as Cu-63 and Cu-65. Given Atomic Weight
- A 5 molar solution of H₂SO₄ is diluted from 1 liter to a volume of 10 litres
Topics: Basic Principles of Organic Chemistry (124)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply