MCQ
For the below given cyclic hemiacetal $(X)$, the correct pyranose structure is.


- A

- B

- C

- ✓








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$b. NH_3 < PH_3 < AsH_3$ Reducing power
$c. NI_3 > NBr_3 > NCl_3$ Lewis basic character
$d. N_2O_5 > P_2O_5 > As_2O_5$ Acidic character
Correct order is
$Cl_2 + 2Y^-\to 2Cl^-+ Y_2$
The incorrect match regarding above reaction is
$I$. $-I$ Effect of nitro group.
$II$. Greater resonance effect of $p-$ nitrophenoxy group
$III$. Steric effect of bulky nitro group

$E_a\ (Kcal/mol)\,||$ Temp. Change $(K)$
$(I)$ $40\,||\,200\, -\, 210$
$(II)$ $80\,||\,200 \,-\, 210$
$(III)$ $40\,||\,300\, -\, 310$
$(IV)$ $80\,||\,300\, -\, 310$