List of top Chemistry Questions on Amines asked in UP Board XII

Write the structures of (A), (B), and (C) in the following reaction:
\[ C_6H_5NO_2 \xrightarrow{Fe/HCl} (A) \xrightarrow[\text{273 K}]{NaNO_2 + HCl} (B) \xrightarrow[\Delta]{H_2O/H^+} (C) \]
What happens when aniline reacts with the following:
(A) Bromine water
(B) $(CH_3CO)_2O$ / Pyridine
(C) $HNO_2 + HCl (0^\circ - 5^\circ C)$
Give the structures of A, B, and C in the following reaction sequences: (i)\; \(\mathrm{CH_3CH_2I} \xrightarrow[\ ]{\mathrm{NaCN}} A \xrightarrow[\ ]{\;\;HO^-\;/\;H_2O\;\;} B \xrightarrow[\;Br_2/NaOH\;]{} C\)
(ii)\; \(\mathrm{C_6H_5N_2^+Cl^-} \xrightarrow[\ ]{\mathrm{CuCN}} A \xrightarrow[\ ]{\;H_3O^+\;} B \xrightarrow[\ \Delta\ ]{\;NH_3\;} C\)
(iii)\; \(\mathrm{CH_3CH_2Br} \xrightarrow[\ ]{\mathrm{KCN}} A \xrightarrow[\ ]{\mathrm{LiAlH_4}} B \xrightarrow[\;273\,K\;]{\;HNO_2\;} C\)
Write short notes on the following:
(i) Carbylamine reaction
(ii) Hofmann–bromamide reaction
(iii) Diazotisation
The correct IUPAC name for \( CH_2 = CHCH_2NHCH_3 \) is:
Describe the laboratory method to prepare aniline and write the related chemical equation. Write also the equations of its two chemical properties and uses.
Write short notes on the following:
i) Carbylamine reaction
ii) Hofmann's bromamide reaction
iii) Acetylation
Bromination of Aniline gives –
Complete the following equations:
(i) $\mathrm{C_6H_5NH_2 + CHCl_3 + KOH(alc)} \;\longrightarrow$
(ii) $\mathrm{C_6H_5NH_2 + Br_2(aq)} \;\longrightarrow$
(iii) $\mathrm{C_6H_5NH_2 + (CH_3CO)_2O} \;\longrightarrow$
(iv) $\mathrm{C_6H_5NH_2 + H_2SO_4(conc.)} \;\longrightarrow$
(v) $\mathrm{C_6H_5NH_2 + CH_3COCl \xrightarrow{\,base\,}} \;\longrightarrow$
Write short notes on the following:
(i) Carbylamine reaction
(ii) Hofmann's bromamide reaction
(iii) Schmidt reaction
How will you obtain Ethylamine from the following? Write chemical equation only:
(i) Methyl cyanide
(ii) Propanamide
(iii) Acetamide
(iv) Nitroethane
(v) Ethyl isocyanate
How many primary amines are possible for the formula C$_4$H$_{11$N?}
Write chemical equation of five chemical properties of amines.
Write chemical equations of three methods of preparation of amine and also write the mechanism of ammonolysis of alkyl halides.
Which of the following amine does not give carbylamine reaction?
Describe the method of identification of primary, secondary and tertiary amines. Write the chemical equations of these reactions also.
The boiling points of amines are lower than their comparable alcohols and carboxylic acids. Explain.
Best method of preparing primary amines from alkyl halides without changing the number of carbon atoms in the chain is
Gabriel-Pthalimide synthesis is given priority in the synthesis of primary amines.
Methyl amine gives precipitate of hydrated ferric oxide on reaction with ferric chloride in water.
Aniline does not show Friedel-Crafts reaction.
Write the following in order:
(i) Decreasing order of \( pK_b \) value: \( \text{C}_2\text{H}_5\text{NH}_2, \text{C}_6\text{H}_5\text{NHCH}_3, \text{C}_2\text{H}_5\text{NH}_2 \).
(ii) Decreasing order of basic strength: \( \text{C}_6\text{H}_5\text{NH}_2, \text{C}_6\text{H}_5\text{N(CH}_3\text{)}_2, \text{C}_6\text{H}_5\text{NH}_2 \).
(iii) Increasing order of basic strength: Aniline; p-nitroaniline; and paratoludine.
(iv) Solubility order in water: \( \text{C}_6\text{H}_5\text{NH}_2, (\text{C}_2\text{H}_5)_2\text{NH}, \text{C}_2\text{H}_5\text{NH}_2 \).
(v) Increasing order of boiling point: \( \text{C}_2\text{H}_5\text{OH}, \text{CH}_3\text{NH}_2, \text{C}_2\text{H}_5\text{NH}_2 \).
Write the chemical equation for the preparation of Aniline and write the chemical equation of its reaction with the following:
\(pK_b\) value of aniline is more in comparison to that of methyl amine. State the reason.
How many primary amines are possible for the formula C$_4$H$_{11}$N?