MHT-CET Amines — practice questions
78 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice MHT-CET Amines in the app →Replacing hydrogen atoms of which parent compound with alkyl or aryl groups gives amines?Which feature of the nitrogen atom in an amine makes it basic and nucleophilic?What is the simplest aromatic amine, with a phenyl group bonded to an amino group?Trimethylamine, known for a distinctive fishy smell, is which class of amine?Which amine is mainly responsible for the smell of decaying fish?What happens to the 1H NMR signals of amine N-H protons when D2O is added to the sample?What geometry is characteristic of the nitrogen centre in alkyl amines?Why is nitrogen nearly planar in aromatic amines such as aniline?How do alkyl and aryl groups on nitrogen affect the basicity of an amine?Why is aniline a weaker base than aliphatic amines?Heating ammonia with an alkyl bromide gives what kind of product?The Gabriel synthesis converts primary alkyl halides into which product?Which salt is traditionally alkylated in the Gabriel synthesis?Which reagent is used in the Ing–Manske procedure to free the amine from N-alkylphthalimide?Which reactive species forms in situ when bromine reacts with sodium hydroxide in the Hofmann rearrangement?Which intermediate forms when the bromoamide anion rearranges in the Hofmann rearrangement?Which gas is given off when the carbamic acid decomposes in the Hofmann rearrangement?Which of these can replace bromine as the oxidant in a Hofmann rearrangement?Which alkene is favoured as the Hofmann product in Hofmann elimination?A primary amine heated with chloroform and base gives which compound class?Which reactive intermediate forms from chloroform during the carbylamine reaction?A foul odour after heating a sample with alcoholic KOH and chloroform indicates which type of amine?Which amines give a negative carbylamine test?What is the Hinsberg reagent used to distinguish amines?In the Hinsberg test, what does a primary amine form in aqueous alkali?Acyl chlorides and acid anhydrides react with primary and secondary amines to give what?What do amines form when they react with acids?Which reagent converts aromatic amines into diazonium salts?At what temperature range are diazonium chlorides classically prepared?Who first reported diazotization in 1858?Which counterion makes benzenediazonium salt described as shock insensitive rather than explosive?What is the first and still main use of diazonium salts?Which azo dye is used in the laboratory as a pH indicator?Which coupling partner gives an intensely orange-red dye with a diazonium salt?Which reducing agent converts diazonium salts into hydrazine derivatives?The Sandmeyer reaction converts aryl diazonium salts to aryl halides using which kind of reagent?Which copper reagent in a Sandmeyer reaction converts a diazonium salt into an aryl nitrile?What type of mechanism does the Sandmeyer reaction follow?How is aniline made industrially from nitrobenzene?What forms when bromine water is added to aniline?Why does freshly purified aniline gradually turn yellow or red on standing?Relative to benzene, aniline reacts faster in electrophilic aromatic substitution because it is what?Heating aniline with sulfuric acid at 180 °C produces which compound?Which reducing agent did Nikolay Zinin use in 1842 to convert nitrobenzene to aniline?Which metals are often used in the laboratory to reduce nitroaromatics to anilines?From which amino acids are amine hormones synthesised?Which of these neurotransmitters is an amine?Why can amines of the type NHRR' not be obtained in optical purity?Which pair names a three-membered and a six-membered cyclic amine respectively?The diazonium group is described as among the most strongly what kind of substituent?Why are alkyl diazonium salts of little importance compared with aryl ones?Treating an arenediazonium salt with cuprous cyanide gives which type of compound?Amines are classified as 1°, 2° or 3° according to what?An amine whose nitrogen carries three different alkyl groups is called what?Which reagent pair reduces nitrobenzene to aniline?What does the reduction of R-NO2 with Sn/HCl give, besides water?Gabriel phthalimide synthesis is used to prepare which class of amines?In Gabriel synthesis, phthalimide is first converted to its potassium salt using what?What is the last step of Gabriel phthalimide synthesis?Hofmann bromamide degradation converts an amide into what?Which reagents are used in Hofmann bromamide degradation?Hofmann degradation is described as which kind of reaction?Why are primary and secondary amines able to form hydrogen bonds with each other?The basic nature of amines is due to which feature of nitrogen?Basic strength of amines is expressed quantitatively by which values?How many resonance structures are shown for aniline?An aqueous solution of a water-soluble amine does what to red litmus?Which reagent converts tetraalkylammonium halide into the hydroxide before Hofmann elimination?Using excess alkyl halide on an amine gives mainly what, called exhaustive alkylation?The carbylamine reaction is a test for which type of amine?The carbylamine reaction of RNH2 with CHCl3 and KOH gives which product?Aniline, when heated with chloroform and alcoholic KOH, gives a product with what property?Ethanamine reacts with ethanoyl chloride in pyridine to give what type of product?Primary aromatic amines react with HNO2 at 273 to 278 K to form what?Coupling of diazonium salts with phenols or aromatic amines gives what?Azo coupling is an example of which type of reaction?Azo coupling usually occurs at which position relative to the activating group?Benzenediazonium chloride couples with phenol in mild alkali to give which coloured dye?