NEET Amines — Set 7

Question 1

Which test produces a foul odor with primary aliphatic amines?

Accepted Answer

The carbylamine test ($ \ce{CHCl3} $ + alcoholic KOH) with primary aliphatic amines forms isocyanides, which have a foul odor, as per the PDF’s chemical properties.

Question 2

Which amine can be prepared by reducing $ \ce{CH3CH2NO2} $ with $ \ce{H2/Ni} $?

Accepted Answer

Reduction of nitroethane ($ \ce{CH3CH2NO2} $) with $ \ce{H2/Ni} $ yields ethylamine ($ \ce{CH3CH2NH2} $), as per the PDF’s preparation methods.

Question 3

Aniline on nitration gives a significant amount of:

Accepted Answer

In strong acidic medium, aniline protonates to form anilinium ion, which is meta-directing, leading to substantial m-nitroaniline alongside ortho and para isomers.

NEET Chemistry: Amines — Practice Set 7

Q1. Which test produces a foul odor with primary aliphatic amines?

Q2. Which amine can be prepared by reducing \( \ce{CH3CH2NO2} \) with \( \ce{H2/Ni} \)?

Q3. Aniline on nitration gives a significant amount of:

Q4. The product of \( \ce{C6H5NH2} \) reacting with one mole of \( \ce{CH3COCl} \) is:

Q5. The product of \( \ce{CH3CH2NH2} \) reacting with \( \ce{HNO2} \) at 273-278 K is:

Q6. The hybridization of nitrogen in \( \ce{CH3NH2} \) is:

Q7. The product of the reaction \( \ce{CH3CH2NH2 + HCl ->} \) is:

Q8. Which amine forms a sulphonamide insoluble in alkali with \( \ce{C6H5SO2Cl} \)?

Q9. The strongest base in gaseous phase among the following is:

Q10. The IUPAC name of \( \ce{CH3N(CH2CH3)2} \) is: