Download App

The p-Block Elements — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryThe p-Block Elements1 Mark
MCQ
Boric acid is not a protonic acid but it acts as a Lewis acid by:
  • ✓
    Accepting electrons from a hydroxyl ion.
  • B
    Donating electrons to a chloride ion.
  • C
    Donating electrons to a proton.
  • D
    Accepting proton from water.
✓

Answer

Correct option: A.
Accepting electrons from a hydroxyl ion.
Boric acid is not a protonic acid, but it acts as a Lewis acid by accepting electrons from a hydroxyl ion.
$\text{B(OH)}_3+2\text{HOH}\xrightarrow{\ \ \ \ \ \ \ }[\text{B}(\text{OH})_4]^-+\text{H}_3\text{O}^+$.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from The p-Block Elements→The p-Block Elements — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Correct statements among the following is/are
→
In the coordinate valency
→
Which is true about $H_3BO_3$
→
What will be the resonance energy of $N_2O$ from following data : $\Delta H_f(N_2O) = 82\, kJ\, mol^{-1}$, Bond energy of $N  \equiv  N, N = N, O = O$ and $N = O$ Bonds are $946, 418, 498, 607\, kJ\, mol^{-1}$ respectively......$kJ\, mol^{-1}$
→
In the electrolytic extraction of aluminium, cryolite is used
→
Which of the following statement concerning the four quantum numbers is false
→
The distance between two adjuscent carbonn atoms is maximum in
→
In presence of $\ce{HCl(aq.);H_2​S}$ gas results the precipitation of group $-2$ cations but not of group $-4$ cations during qualitative analysis. It is due to :
→
What will be the $pH$ and $\alpha $ (degree of hydrolysis) respectively for the salt $BA$ of $0.1\, M$ concentration? (Given: $K_a$ for $HA = 10^{-6}$ and $K_b$ for $BOH = 10^{-6}$ )
→
Amphibole silicate structure has $'x'$ number of corner shared per tetrahedron. The value of $'x'$ is
→