MCQ
In a cyclotrimetaphosphoric acid molecule, how many single and double bonds are present?
  • A
    $3$ double bonds$; 9$ single bonds.
  • B
    $6$ double bonds$; 6$ single bonds.
  • $3$ double bonds$; 12$ single bonds.
  • D
    Zero double bonds$; 12$ single bonds.

Answer

Correct option: C.
$3$ double bonds$; 12$ single bonds.
Structure of Cyclotrimetaphosphoric acid.

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$1.$  How can the conversion of $(i)$ to $(ii)$ be brought about?

$(A)$ $\mathrm{KBr}$  $(B)$ $\mathrm{KBr}+\mathrm{CH}_3 \mathrm{ONa}$  $(C)$ $\mathrm{KBr}+\mathrm{KOH}$  $(D)$ $\mathrm{Br}_2+\mathrm{KOH}$

$2.$  Which is the rate determining step in Hofmann bromamide degradation?

$(A)$ Formation of $(i)$  $(B)$ Formation of $(ii)$  $(C)$ Formation of $(iii)$  $(D)$ Formation of $(iv)$

$3.$  What are the constituent amines formed when the mixture of $(i)$ and $(ii)$ undergoes Hofmann bromamide degradation?

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give the answer question $1$, $2$, and $3.$