MCQ
The pair of molecules with different hybridisation but same shape
- A$SO_2, CO_2$
- ✓$CO_2, Br_3^-$
- C$PCl_5, I_3^-$
- D$CH_4, COCl_2$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Assertion $A :$ The amphoteric nature of water is explained by using Lewis acid/base concept.
Reason $R$ : Water acts as an acid with $NH _{3}$ and as a base with $H _{2} S$.
In the light of the above statements choose the correct answer from the options given below :
$MnCl _2+ K _2 S _2 O _8+ H _2 O \longrightarrow KMnO _4+ H _2 SO _4+ HCl$ (equation not balanced).
Few drops of concentrated $HCl$ were added to this solution and gently warmed. Further, oxalic acid ( $225 mg$ ) was added in portions till the colour of the permanganate ion disappeared. The quantity of $MnCl _2$ (in $mg$ ) present in the initial solution is. . . . . . . . . (Atomic weights in $g mol ^{-1}: Mn =55, Cl =35.5$ )