Chemistry 1st Paper MCQ-Dinajpur Board-2021

$\mathrm{H}_{3} \mathrm{PO}_{4}^{-}+\mathrm{Na}_{2} \mathrm{HPO}_{4}$

$\mathrm{HS}^{-}+\mathrm{Na}_{2} 2$

$\mathrm{CO}_{3}{ }^{2-}+\mathrm{HCO}_{3}^{-}$

$\mathrm{CO}_{3}{ }^{2-}+\mathrm{HCO}_{3}^{-}$

i and ii

ii and iii

i and iii

i, ii and iii

i and ii

ii and iii

i and iii

i, ii and iii

1p

4s

3f

2d

More soluble covalent compound

More soluble ionic salt

Less soluble ionic salt

Less soluble covalent compound