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JEE CHEMISTRY MCQ: AMINES

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In aqueous solutions, the basic strength of amines decreases in the order
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Correct option: D
(CH3)2NH2>CH3NH2>(CH3)3N{\left( {\mathrm{C}{\mathrm{H}_3}} \right)_2}\mathrm{N}{\mathrm{H}_2} > \mathrm{C}{\mathrm{H}_3}\mathrm{N}{\mathrm{H}_2} > {\left( {\mathrm{C}{\mathrm{H}_3}} \right)_3}\mathrm{N}
Option D ((CH3)2NH2>CH3NH2>(CH3)3N{\left( {\mathrm{C}{\mathrm{H}_3}} \right)_2}\mathrm{N}{\mathrm{H}_2} > \mathrm{C}{\mathrm{H}_3}\mathrm{N}{\mathrm{H}_2} > {\left( {\mathrm{C}{\mathrm{H}_3}} \right)_3}\mathrm{N}) is correct because in aqueous solutions, the basic strength of amines depends on the electron-donating effect and steric hindrance.

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Identify 'Z\mathrm{Z}' in the sequence

C6H5NH2→NaNO2+HClX→CuCNY→H+/H2OZ{{\text{C}}_6}{{\text{H}}_5}{\text{N}}{{\text{H}}_2}\xrightarrow{{{\text{NaN}}{{\text{O}}_2} + {\text{HCl}}}}{\text{X}}\xrightarrow{{{\text{CuCN}}}}{\text{Y}}\xrightarrow{{{{\text{H}}^ + }/{{\text{H}}_2}{\text{O}}}}{\text{Z}} The primary, secondary and tertiary amines can be distinguished by: Assertion: The main product of reaction of alcoholic silver nitrite and ethyl bromide is nitroethane.

Reason: Silver nitrite is predominantly covalent compound. Hofmann’s bromamide reaction is to convert Gabriel phthalamide synthesis is used for preparation of :- Elements found in explosive are:
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