Amines & Nitrogen Compounds · JEE Main previous year questions

The conversion of benzene diazonium chloride to bromobenzene can be accomplished by

1. A.Reimer-Tiemann reaction
2. B.Friedel-Crafts reaction
3. C.Gattermann reaction
4. D.Azo-coupling reaction

Which one of the following has an optical isomer ? (en = ethylenediamine)

1. A.$[\mathrm{Zn}(\mathrm{en})(\mathrm{N}{\mathrm{H}}_3{)}_2{]}^{2+}$
2. B.$[\mathrm{Co}(\mathrm{en}{)}_3{]}^{3+}$
3. C.$[\mathrm{Co}({\mathrm{H}}_2\mathrm{O}{)}_4\mathrm{en}{]}^{3+}$
4. D.$[\mathrm{Zn}(\mathrm{en}{)}_2{]}^{2+}$

How many EDTA (ethylenediaminetetraacetic acid) molecules are required to make an octahedral complex with a $\mathrm{C}{\mathrm{a}}^{2+}$ ion?

1. A.Six
2. B.Three
3. C.One
4. D.Two

Reaction of cyclohexanone with dimethylamine in the presence of catalytic amount of an acid forms a compound if water during the reaction is continuously removed. The compound formed is generally known as

1. A.a Schiff’s base
2. B.an enamine
3. C.an imine
4. D.an amine

Which one of the following methods is neither meant for the synthesis nor for separation of amines?

1. A.Hinsberg method
2. B.Hofmann method
3. C.Wurtz reaction
4. D.Curtius reaction

Which one the following has largest number of isomers? (R = alkyl group, en = ethylenediamine)

1. A.$[\mathrm{Ru}(\mathrm{N}{\mathrm{H}}_3{)}_4\mathrm{C}{\mathrm{l}}_2{]}^{+}$
2. B.$[\mathrm{Co}(\mathrm{en}{)}_2\mathrm{C}{\mathrm{l}}_2{]}^{+}$
3. C.$[\mathrm{Ir}(\mathrm{P}{\mathrm{R}}_3{)}_2\mathrm{H}(\mathrm{CO}){]}^{2+}$
4. D.$[\mathrm{Co}(\mathrm{N}{\mathrm{H}}_3{)}_5\mathrm{Cl}{]}^{2+}$

When primary amine reacts with chloroform in ethanoic KOH then the product is

1. A.an isocyanide
2. B.an aldehyde
3. C.a cyanide
4. D.an alcohol