In Lassaigne’s test a violet colour obtained indicates the presence of

In Lassaignes Test A Violet Colour Obtained Indicates The Presence Chemistry Question

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:

  1. Phenol reacts with bromine in chloroform at low temperature to gives
  2. The electronic configuration of transition elements is exhibited by
  3. The electronic configuration of gadolinium (Atomic No.64) is
  4. The organic reaction product from the reaction of methyl magnesium bromide
  5. Which of the following is the smallest in size?

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.

NEETLab Mobile App

Share this page with your friends

Be the first to comment

Leave a Reply

Your email address will not be published.


*