Chemistry 1st Paper MCQ-Chittagong Board-2023

$3.25 \times 10^{-5}$

$6.5 \times 10^{-5}$

$1.3 \times 10^{-4}$

$2.6 \times 10^{-4}$

$\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$

$\mathrm{K}_{2} \mathrm{H}_{2} \mathrm{Sb}_{2} \mathrm{O}_{7}$

$\left(\mathrm{NH}_{4}\right)_{2} \mathrm{C}_{2} \mathrm{O}_{4}$

$\mathrm{K}_{2} \mathrm{Hg} \mathrm{I}_{4}$

Sulphar dioxide

Sodium benzoate

Sodium chloride

Ethylene glycol

$\mathrm{H}_{2} \mathrm{O}<\mathrm{NH}_{3}<\mathrm{HF}$

$\mathrm{NH}_{3}<\mathrm{H}_{2} \mathrm{O}<\mathrm{HF}$

$\mathrm{HF}<\mathrm{NH}_{3}<\mathrm{H}_{2} \mathrm{O}$

$\mathrm{NH}_{3}<\mathrm{HF}<\mathrm{H}_{2} \mathrm{O}$

i and ii

ii and iii

i and iii

i, ii and iii