Aniline MCQ

Which reagent is used to reduce nitrobenzene to aniline?

Sn/HCl

What is the product of Hofmann degradation of an amide?

Primary amine

Hofmann degradation results in the loss of how many carbon atoms from the original amide?

1

Which of the following is not involved in preparing aniline from nitrobenzene?

HNO₃

The reaction of CH₃CO-NH₂ with Br₂ and KOH gives:

Methylamine

Disproportionation of HNO₂ produces:

HNO₃ and NO

In identifying tertiary amines, which compound is not formed?

Yellow precipitate

Which is a test used to differentiate primary, secondary, and tertiary amines?

HNO₂ reaction

Zwitter ions contain:

Both +ve and -ve charges

In the basicity of aniline derivatives, which factor increases basic strength?

Electron-donating group

Which amine cannot form hydrogen bonds with water easily?

3° amine

Which test gives a foul 'dead fish' smell when reacting with 1° amine?

Carbylamine test

Azo compounds contain which bond?

N=N

The white precipitate formed by heating AgNO₃ with chloroform is due to:

AgCl

What is the product of diazotization of aniline?

Benzenediazonium chloride

What is the product when benzenediazonium chloride reacts with phenol?

Azo dye

Which statement is true about chloroform under UV light with oxygen?

Ruins sample

Which intermediate is not seen in diazotization reaction?

Nitrasoamine

Which compound can be used to detect chloroform impurity?

AgNO₃

What’s formed when 2° amine reacts with HNO₂?

Nitrosoamine

How many types of amines can be differentiated using the HNO₂ test?

3

In a 3° amine + HNO₂ test, the product is:

Soluble ammonium salt

Which amine is least basic due to resonance effects?

Aniline

Which is used to prepare HNO₂ freshly in lab?

NaNO₂ + HCl

During diazotization, temperature should be kept around:

0–5°C