MCQ
Above $(C-N)$ coupling reaction take place at
  • A
    low $pH$
  • Intermediate $pH$
  • C
    high $pH$
  • D
    any $pH$

Answer

Correct option: B.
Intermediate $pH$
b

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Of the following acids, the one that is strongest is
Consider the coordination compound, $[Co(NH_3)_6]Cl_3$. In the fonnation of this complex, the species which acts as the Lewis acid is
Van't Hoff factor $i$
Arrange the following amines in the order of increasing basicity.
The order of the oxidation state of the phosphorus atom in $\mathrm{H}_3 \mathrm{PO}_2, \mathrm{H}_3 \mathrm{PO}_4, \mathrm{H}_3 \mathrm{PO}_3$, and $\mathrm{H}_4 \mathrm{P}_2 \mathrm{O}_6$ is
The following solutions were prepared by dissolving $10\, \mathrm{~g}$ of glucose $\left(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}\right)$ in $250 \,\mathrm{ml}$ of water $\left(\mathrm{P}_{1}\right)$, $10\, \mathrm{~g}$ of urea $\left(\mathrm{CH}_{4} \mathrm{~N}_{2} \mathrm{O}\right)$ in $250\, \mathrm{ml}$ of water $\left(\mathrm{P}_{2}\right)$ and $10\, \mathrm{~g}$ of sucrose $\left(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}\right)$ in $250\, \mathrm{ml}$ of water $\left(\mathrm{P}_{3}\right)$. The right option for the decreasing order of osmotic pressure of these solutions is :
${N_2}$ forms $NC{l_3}$, whereas $P$ can form both $PC{l_3}$ and $PC{l_5}$. Why
The electrons which take part in order to exhibit variable oxidation states by transition metals are
Two elements $A$ and $B$ which form $0.15\,moles$ of $A _{2} B$ and $AB _{3}$ type compounds. If both $A _{2} B$ and $A B_{3}$ weigh equally, then the atomic weight of $A$ is $....$ times of atomic weight of $B$.
When copper rod donates electrons to hydrogen ions, it gains ................. charge.