Nitrogen Containing Compounds
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Questions and Answers

What is the primary reason for the observed order of basicity of lower aliphatic amines as secondary > primary > tertiary?

  • Steric factors, i.e., crowding of alkyl groups (correct)
  • Inductive effect of alkyl groups
  • Electrophilic nature of amines
  • Resonance stabilization of the nitrogen atom

What is the effect of electron-releasing alkyl groups on the basicity of amines?

  • Increase the electron density around the nitrogen atom (correct)
  • Have no effect on the electron density around the nitrogen atom
  • Make the amine more acidic
  • Decrease the electron density around the nitrogen atom

Which of the following types of amines are expected to be stronger bases than ammonia?

  • Amines containing tertiary butyl group
  • Only tertiary amines
  • Only primary and secondary amines
  • All lower aliphatic amines (correct)

What is the primary reason for the decrease in solubility of amines with an increase in molecular mass?

<p>Hydrogen bonding between amine and water molecules (D)</p> Signup and view all the answers

What is the primary role of the lone pair of electrons on the nitrogen atom in amines?

<p>Donation to electron-seeking reagents (C)</p> Signup and view all the answers

Which of the following factors affects the basicity of amines?

<p>All of the above (D)</p> Signup and view all the answers

What is the reason acetamide does not show basic nature?

<p>Due to resonance stabilization (D)</p> Signup and view all the answers

Which type of amines undergoes the carbylamine reaction?

<p>Primary amines (D)</p> Signup and view all the answers

What is the result of the reaction of amines with mineral acids?

<p>Formation of alkylammonium salts (A)</p> Signup and view all the answers

Which of the following is a characteristic of the solutions of amines?

<p>Alkaline in nature (B)</p> Signup and view all the answers

What is the reason behind the increase in boiling points of amines with an increase in molecular mass?

<p>Due to the presence of intermolecular hydrogen bonding (B)</p> Signup and view all the answers

Why are aniline or other aromatic amines less basic than aliphatic amines?

<p>Because the electron density is less on the N atom due to resonance stabilization (C)</p> Signup and view all the answers

What is the effect of resonance stabilization on the basicity of anilinium ion?

<p>It decreases the basicity of the anilinium ion (D)</p> Signup and view all the answers

Why do lower amines have a characteristic ammonia-like smell?

<p>Due to the presence of the nitrogen atom (D)</p> Signup and view all the answers

What is the product formed when an amine hydrochloride is distilled with NaOH?

<p>Primary amine (D)</p> Signup and view all the answers

What is the odour of alkyl cyanides?

<p>Pleasant, similar to bitter almonds (B)</p> Signup and view all the answers

What is the solubility of alkyl cyanides in water?

<p>Decreases with the increase in number of carbon atoms (B)</p> Signup and view all the answers

What is the product formed when methyl cyanide is hydrolysed?

<p>Acetic acid and ammonia (B)</p> Signup and view all the answers

What is the characteristic of alkyl isocyanides?

<p>Colourless, unpleasant smelling liquids (A)</p> Signup and view all the answers

What is the product formed when an alkyl cyanide is reduced with lithium aluminium hydride?

<p>Primary amine (B)</p> Signup and view all the answers

What is the main product formed when methyl chloride reacts with AgCN?

<p>Methyl isocyanide (B)</p> Signup and view all the answers

Which of the following reactions is used to detect primary amino groups?

<p>Carbylamine reaction (A)</p> Signup and view all the answers

Why are alkyl isocyanides used in detection of very minute leakage?

<p>Due to their unpleasant smell (B)</p> Signup and view all the answers

What is the characteristic of isocyanides compared to cyanides?

<p>Isocyanides are less polar than cyanides (C)</p> Signup and view all the answers

What is the major difference in the smell of ethyl cyanide and ethyl isocyanide?

<p>Ethyl cyanide has a strong but pleasant smell, while ethyl isocyanide has an extremely unpleasant smell. (C)</p> Signup and view all the answers

What was the gas responsible for the Bhopal gas tragedy in 1984?

<p>Methyl isocyanate (D)</p> Signup and view all the answers

What is the product formed when ethyl cyanide is hydrolyzed with acids?

<p>Propionic acid (D)</p> Signup and view all the answers

What is the general formula for the reduction of nitro compounds to form amines?

<p>R - NO2 + 6[H] → RNH2 + 2H2O (A)</p> Signup and view all the answers

What is the name of the reaction that reduces nitriles to form amines?

<p>Mendius reaction (B)</p> Signup and view all the answers

What is the general classification of amines based on the number of alkyl groups attached to the nitrogen atom?

<p>Primary, secondary, and tertiary (A)</p> Signup and view all the answers

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