Download App

8.3. Organic chemistry purification and characterization — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry8.3. Organic chemistry purification and characterization1 Mark
MCQ
In the qualitative analysis of nitrate a brown ring is formed due to the formation of
  • A
    $N{O_2}$
  • B
    $FeS{O_4}N{O_2}$
  • C
    ${N_2}O.FeS{O_4}$
  • ✓
    $FeS{O_4}.NO$
✓

Answer

Correct option: D.
$FeS{O_4}.NO$
d
(d)Nitrates on reaction with conc. ${H_2}S{O_4}$ and $FeS{O_4}$ give a brown ring due to formation of $FeS{O_4}.NO$ or $[Fe{({H_2}O)_5}NO]S{O_4}$.

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 8.3. Organic chemistry purification and characterization→8.3. Organic chemistry purification and characterization — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Many ionic crystals dissolve in water because
→
$4.4\;g$ of an unknown gas occupies $2.24\,L$ of volume at standard temperature and pressure. The gas may be
→
A lone pair of electrons in an atom implies
→
$pH$ of $0.1\,\, M$ $N{H_3}$ aqueous solution is $({K_b} = 1.8 \times {10^{ - 5}})$
→
Match the column for molecular shape ?
Column $I$   Column $II$
$(a)\,XeO_6^{-4}$ $(P)$ Tetrahedral
$(b)\,ClO_2$ $(Q)\,V-$ Shape
$(c)\,NH_4^+$ $(R)$ Trigonal Bipyramidal
$(d)\,XeO_3F_2$ $(S)$ Octahedral
→
Which is the example of branch isomerization
→
What is the wavelength of light required to raise an electron in the $O^{7+}$ ion from $n=1$ to shell to $n=2$ shell ............... $\mathrm{nm}$
→
A solution of two components containing $n_{1}$ moles of the $1^{\text {st }}$ component and $n_{2}$ moles of the $2^{\text {nd }}$ component is prepared. $M _{1}$ and $M _{2}$ are the molecular weights of component $1$ and $2$ respectively. If $d$ is the density of the solution in $g\, mL ^{-1}, C _{2}$ is the molarity and $x _{2}$ is the mole fraction of the $2^{\text {nd }}$ component, then $C_{2}$ can be expressed as 

 

→
Compounds with same molecular formula but different structural formula are called
→
Thermodynamically, the most stable form of carbon is
→