MCQ
There is no $S-S$ bond in
  • A
    $S_2O_4^{2-}$
  • $S_2O_5^{2-}$
  • C
    $S_2O_3^{2-}$
  • D
    $S_2O_7^{2-}$

Answer

Correct option: B.
$S_2O_5^{2-}$
b
$KOH\, + \,{O_3}\, \to \underbrace {\mathop {K{O_3}}\limits_{(a)} \, + \mathop {{O_2}\,}\limits_{(b)} }_{Paramagnetic} + {H_2}O$

$K{O_3}\, + HCl\, \to \,{O_2}\, + KCl\, + \,{H_2}O$

$O_2$ is best absorbed by alkaline pyrogallol.

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

The osmotic pressure of a $5\%$  (wt/vol) solution of cane sugar at $150\,^oC$ is ......... $atm.$
Given ${E^o}_{A{g^ + }/Ag} = 0.80\,V,\,\,\,{E^o}_{M{g^{2 + }}/Mg} =  - 2.37\,V,$ ${E^o}_{C{u^{2 + }}/Cu} = 0.34\,V,\,\,{E^o}_{H{g^{2 + }}/Hg}\, = 0.79\,V.$

Which of the following statements is correct ?

A beaker contains a solution of substance ‘A’. Precipitation of substance ‘A’ takes place when small amount of ‘A’ is added to the solution. The solution is _________.
The one which is unimolecular reaction is
An organic compound $A$ upon reacting with $NH_3$ gives $B.$ On heating $B$ gives $C.$ $C$ in presence of $KOH$ reacts with $Br_2$ to given $CH_3CH_2NH_2. A$ is :
Select the correct code of $TRUE$ and $FA LSE$ for given statements

$(a)$ Peroxide ion as well as dioxygen molecule both are paramagnetic  species
$(b)$ In set of isomers, $[Cr(H_2O)_6]Cl_3$ and $[CrCl(H_2O) _5]Cl_2 . H_2O,$ both compounds can easily loose water molecule on treatment with cone. $H_2SO_4$
$(c)$ During transformation $NO \to NO^+$ , bond length and magnetic  behaviour decreases 
$(d)$ An ether is more volatile than alcohol both having same molecular formula

Four successive members of the first row transition elements are listed below with atomic numbers. Which one of them is expected to have the highest $E^o_{M^{3+} /M^{2+}}$ value ?
What can the highest oxidation state of a transition element be equal to?
If the standard reduction potential for four divalent elements $X,\, Y, \,Z,\, W$ are $-1.46\, V,\, -0.36V,\,0.15\, V$ and $-1.24\, V$ respectively, then :-
Cholrine gas is produced from HCI by the addition of: