MCQ
Which of the following is a Lewis base
  • A
    $NaOH$
  • $N{H_3}$
  • C
    $BC{l_3}$
  • D
    All of these

Answer

Correct option: B.
$N{H_3}$
(b)$N{H_3}$ is Lewis base because of one lone pair of electron.

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

Similar questions

$2\text{NO}_2(\text{g})\rightleftharpoons\text{N}_2\text{O}_4(\text{g})+60.0\text{KJ,}$ the increase in temperature:
Which one of the following potential energy $(P.E.)$ graph is not correctly matched :
The addition of solid sodium carbonate to pure water causes
Choose the correct statement($s$) among the following.

$(A)$ $SnCl _2 \cdot 2 H _2 O$ is a reducing agent.

$(B)$ $SnO _2$ reacts with $KOH$ to form $K _2\left[ Sn ( OH )_6\right]$.

$(C)$ A solution of $PbCl _2$ in $HCl$ contains $Pb ^{2+}$ and $Cl ^{-}$ions.

$(D)$ The reaction of $Pb _3 O _4$ with hot dilute nitric acid to give $PbO _2$ is a redoxreaction.

The enthalpy of water is $386\,kJ$. What is entropy of water.......$kJ$
In an atom, an electron is moving with a speed of $600 \,m/s$ with an accuracy of $0.005\%.$ Certainity with which the position of the electron can be located is $( h =6.6 \times 10^{-34} \,kg\, m^2s^{-1},$ mass of electron, $e_m= 9.1 \times 10^{-31}\, kg)$ :
Match list $-I$ with list $-II$ and then select the correct answer from the codes given below that list

                                  List $-I$

$(A){\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {C_6}{H_6} + CO + HCl\,\xrightarrow{{AlC{l_3}}}\,{C_6}{H_5}CHO$

$(B){\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {C_6}{H_5} + C{H_3}$ $\xrightarrow{{Cr{O_2}C{l_2}}}\,{C_6}{H_5}CHO$

$(C){\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {C_6}{H_5}C{H_2}Br\, + \,C{H_3}Br$ $\xrightarrow{{Na/ether}}\,{C_6}{H_5}C{H_2}C{H_3}$

$(D){\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {C_6}{H_6}\, + \,{(C{H_3})_2}C = C{H_2}$ $\xrightarrow{{{H_2}S{O_4}}}\,{C_6}{H_5}C{(C{H_3})_3}$

                                 List $-II$
$(a)$   Friedel-Crafts reaction
$(b)$   Wurtz-Fitting reaction
$(c)$   Gattermann-Koch Aldehyde synthesis
$(d)$   Etard’s reaction

In pyrrole the electron density is maximum on
Which gives monosubstituted product
A mixture of $1-$chloropropane and $2-$chloropropane when treated with alcoholic $KOH$ gives