Amines

Correct option(s) for the following sequence of reactions is(are)

In the following reaction the reason why meta-nitro product also formed is :

Aniline with conc. HNO$_3$ / conc. H$_2$SO$_4$ at 288 K gives p-nitroaniline [A] 51%, m-nitroaniline [B] 47% and o-nitroaniline [C] 2%.

Consider the following four compounds I, II, III, and IV.

Choose the correct statement(s).

The compound S is

Aniline reacts with mixed acid (conc. $\mathrm{HNO_3}$ and conc. $\mathrm{H_2SO_4}$) at 288 K to give P (51 %), Q (47%) and R (2%). The major product(s) of the following reaction sequence is (are)

R → [1) Ac$_2$O, pyridine; 2) Br$_2$, CH$_3$CO$_2$H; 3) H$_3$O$^+$; 4) NaNO$_2$, HCl/273-278 K; 5) EtOH, Δ] → S → [1) Sn/HCl; 2) Br$_2$/H$_2$O (excess); 3) NaNO$_2$, HCl/273-278 K; 4) H$_3$PO$_2$] → major product(s)

In the following reaction sequence, the amount of D (in g) formed from 10 moles of acetophenone is ____.

(Atomic weights in g mol$^{-1}$: H = 1, C = 12, N = 14, O = 16, Br = 80. The yield (%) corresponding to the product in each step is given in the parenthesis)

Acetophenone → [NaOBr; H$_3$O$^+$] → A (60%) → [NH$_3$, Δ] → B (50%) → [Br$_2$/KOH] → C (50%) → [Br$_2$ (3 equiv), AcOH] → D (100%)

Which of the following compounds will form significant amount of meta product during mono-nitration reaction ?

A mixture containing the following four compounds is extracted with 1M HCl. The compound that goes to aqueous layer is :

Among the following compounds, the increasing order of their basic strength is :

The product(s) of the following reaction sequence is(are)

Aniline → i) Acetic anhydride/pyridine; ii) $\ce{KBrO3/HBr}$; iii) $\ce{H3O+}$, heat; iv) $\ce{NaNO2/HCl}$, 273-278 K; v) $\ce{Cu/HBr}$

The compound R is

The compound T is

In the Hofmann bromamide degradation reaction, the number of moles of NaOH and $\ce{Br2}$ used per mole of amine produced are :

The test to distinguish primary, secondary and tertiary amines is :

Arrange the following amines in the order of increasing basicity.

In the reaction shown below, the major product(s) formed is/are

On heating an aliphatic primary amine with chloroform and ethanolic potassium hydroxide, the organic compound formed is :

Considering the basic strength of amines in aqueous solution, which one has the smallest $pK_b$ value ?

The major product of the reaction
$$\ce{(CH3)2C(NH2)-C(OH)(CH3)2 ->[NaNO2/H2SO4]}$$
is :

The final product formed when Methyl amine is treated with $\ce{NaNO2}$ and HCl is :