MCQ
Elements of which group form anions most readily
  • A
    Oxygen family
  • B
    Nitrogen group
  • Halogens
  • D
    Alkali metals

Answer

Correct option: C.
Halogens
c
(c)Halogens are most electronegative elements.

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

Extraction of lead by reduction methods is done by
The state of equilibrium refers to:
Lead is maximum in
Which of the following organo-silicon compound on hydrolysis will give a three dimensional silicone
Arrange the compounds $I, II$ and $III$ in decreasing order of their heats of  combustion 
Heat exchanged in a chemical reaction at constant temperature and constant pressure is called as
From the following bond energies :

$H - H$ bond energy $:\, 431.37 \,kJ\, mol^{-1}$
$C= C$ bond energy $:\, 606.10\, kJ \,mol^{-1}$
$C - C$ bond energy $:\, 336.49\, kJ\, mol^{-1}$
$C - H$ bond energy $:\, 410.50\, kJ\, mol^{-1}$

Enthalpy for the reaction,

$\begin{array}{*{20}{c}}
  {H\,\,\,\,H} \\ 
  {|\,\,\,\,\,\,\,\,|} \\ 
  {C = C} \\ 
  {|\,\,\,\,\,\,\,\,\,|} \\ 
  {H\,\,\,\,H} 
\end{array}\, + \,H - H\, \to \,\begin{array}{*{20}{c}}
  {H\,\,\,\,H} \\ 
  {|\,\,\,\,\,\,\,\,|} \\ 
  {H - C - C - H} \\ 
  {|\,\,\,\,\,\,\,\,\,|} \\ 
  {H\,\,\,\,H} 
\end{array}\,$

will be  .............. $\mathrm{kJ \,mol}^{-1}$

The molar heat capacity of water at constant pressure is $75\,\,J\,{K^{ - 1}}\,mo{l^{ - 1}}$. When $ 1.0\, kJ $ of heat is supplied to $100 \,g$  of water which is free to expand the increase in temperature of water is......$K$
If ${K_c}$ is the equilibrium constant for the formation of $N{H_3}$, the dissociation constant of ammonia under the same temperature will be
Chlorine undergoes disproportionation in alkaline medium as shown below :

$ \text { a } \mathrm{Cl}_2(\mathrm{~g})+\mathrm{b} \mathrm{OH}^{-}(\mathrm{aq}) \rightarrow \mathrm{c} \mathrm{ClO}^{-}(\mathrm{aq})+\mathrm{d} \mathrm{Cl}^{-}(\mathrm{aq})  +\mathrm{e} \mathrm{H}_2 \mathrm{O}(l)$

The values of $a, \ b,\  c$ and $d$ in a balanced redox reaction are respectively :