Practice free NEET NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
What is the common name for $ ext{C}_6 ext{H}_5 ext{N}_2^+ ext{Cl}^-$?
The NCERT text explicitly states, 'For example, $ ext{C}_6 ext{H}_5 ext{N}_2^+ ext{Cl}^-$ is named as benzenediazonium chloride'.
Primary aliphatic amines form alkyldiazonium salts that are described as:
The NCERT text mentions, 'Primary aliphatic amines form highly unstable alkyldiazonium salts'.
Arenediazonium salts are stable for a short time in solution at what temperature range?
The NCERT text states, 'Primary aromatic amines form arenediazonium salts which are stable for a short time in solution at low temperatures (273-278 K)'.
The conversion of primary aromatic amines into diazonium salts is known as:
The NCERT text defines this process: 'The conversion of primary aromatic amines into diazonium salts is known as diazotisation'.
Why is nitrous acid produced in situ during the preparation of benzenediazonium chloride?
The NCERT text states, 'Due to its instability, the diazonium salt is not generally stored and is used immediately after its preparation.' This inherent instability makes it impractical to store nitrous acid, hence it's generated in situ from $ ext{NaNO}_2$ and $ ext{HCl}$.
Which statement about benzenediazonium chloride is correct?
The NCERT text describes it as a 'colourless crystalline solid. It is readily soluble in water and is stable in cold but reacts with water when warmed.'
Benzenediazonium fluoroborate is characterized by which of the following properties?
The NCERT text states, 'Benzenediazonium fluoroborate is water insoluble and stable at room temperature.'
In the Sandmeyer reaction, which of the following groups can be introduced into the benzene ring?
The NCERT text explains, 'The $ ext{Cl}^-$, $ ext{Br}^-$ and $ ext{CN}^-$ nucleophiles can easily be introduced in the benzene ring in the presence of $ ext{Cu}( ext{I})$ ion. This reaction is called Sandmeyer reaction.'
What is the key difference between the Sandmeyer reaction and the Gatterman reaction for introducing chlorine/bromine?
The NCERT text states, 'The $ ext{Cl}^-$, $ ext{Br}^-$ and $ ext{CN}^-$ nucleophiles can easily be introduced in the benzene ring in the presence of $ ext{Cu}( ext{I})$ ion. This reaction is called Sandmeyer reaction. Alternatively, chlorine or bromine can also be introduced in the benzene ring by treating the diazonium salt solution with corresponding halogen acid in the presence of copper powder. This is referred as Gatterman reaction.'
Which statement accurately compares the yield of Sandmeyer and Gatterman reactions?
The NCERT text explicitly mentions, 'The yield in Sandmeyer reaction is found to be better than Gattermann reaction.'
Ready to ace NEET?
Free access · No credit card required
Yes. You can attempt every NEET question on this page for free without logging in, and check the correct answer with a detailed explanation instantly.
No account is required to attempt questions and view answers. A free account adds bookmarks, personal notes, and progress tracking.
The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.