NEET Amines — Set 6

Question 1

Which physical property decreases as the amine order increases from primary to tertiary?

Accepted Answer

Hydrogen bonding decreases from primary (two N-H) to secondary (one N-H) to tertiary (no N-H), as per the PDF’s physical properties.

Question 2

Which of the following amines is most soluble in water?

Accepted Answer

Solubility decreases with increasing alkyl chain length due to reduced hydrogen bonding. $ \ce{CH3NH2} $ (smallest chain) is most soluble, as per the PDF’s physical properties.

Question 3

Which reaction of $ \ce{CH3NH2} $ produces a compound with a characteristic foul odor?

Accepted Answer

The carbylamine reaction of $ \ce{CH3NH2} $ with $ \ce{CHCl3} $ and KOH forms methyl isocyanide ($ \ce{CH3NC} $), known for its foul odor, as per the PDF.

NEET Chemistry: Amines — Practice Set 6

Q1. Which physical property decreases as the amine order increases from primary to tertiary?

Q2. Which of the following amines is most soluble in water?

Q3. Which reaction of \( \ce{CH3NH2} \) produces a compound with a characteristic foul odor?

Q4. The product of \( \ce{CH3CH2CH2NH2} \) with \( \ce{CH3CH2Cl} \) in the presence of a base is:

Q5. An amide \( X \) on Hoffmann bromamide reaction gives \( \ce{CH3CH2NH2} \). \( X \) is:

Q6. The product of \( \ce{CH3CH2NH2} \) reacting with excess \( \ce{CH3Cl} \) is:

Q7. An alkyl halide \( X \) reacts with \( \ce{NH3} \) to give \( \ce{CH3CH2CH2NH2} \). \( X \) is:

Q8. The product of \( \ce{CH3CH2CH2CH2NO2} \) reduction with \( \ce{H2/Ni} \) is:

Q9. Which of the following is an aromatic amine?

Q10. Which method selectively produces primary amines without secondary or tertiary byproducts?