MCQ
Which of the following two are not resonating structure ?
- A
- B
- ✓
- D
✓
Answer
Correct option: C.
c
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Identify the pair of reactants that upon reaction, with elimination of HCl will give rise to the dipeptide Gly-Ala.
Match the catalyst with the process
→| Catalyst | Process |
| $(i) \;\mathrm{Na}_{2} \mathrm{O}$ | $(a)$ The oxidation of ethyne to ethanal |
| $(ii) \;\mathrm{TiCl}_{4}+ \mathrm{Al(CH_3)}_{3}$ | $(b)$ Polymerisation of alkynes |
|
$(iii)\;\mathrm{PdCl_2} $ |
$(c)$ Oxidation of $SO_2$ in the manufacture of $H_2SO_4$ |
| $(iv)\;$Nickel complexes | $(d)$ Polymerisation of ethylene |
Which of the following is the correct option ?
$A\mathop {\xrightarrow{{{K_2}C{r_2}{O_7}}}}\limits_{{\text{dil}}{\text{. }}{H_2}S{O_4}} B\mathop {\xrightarrow{{C{H_3}MgI}}}\limits_{{H_2}O} $ $\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,C{H_3}} \\
|
\end{array}} \\
{C{H_3} - C - C{H_3}} \\
| \\
{\,\,\,\,\,OH}
\end{array}$ The reactant $A$ is
→{\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,C{H_3}} \\
|
\end{array}} \\
{C{H_3} - C - C{H_3}} \\
| \\
{\,\,\,\,\,OH}
\end{array}$ The reactant $A$ is
Concentrated aqueous sulphuric acid is $98\%\,\, H_2SO_4$ by mass and has a density of $1.80\, g\, mL^{-1}.$ Volume of acid required to make one litre of $0.1\, M \,H_2SO_4$ solution is ........ $mL$.
→Which is the correct alternate for hydrolysis constant of $N{H_4}CN$
→How many chiral carbons are there in Reserpine (an antipsychotic drug)?
An aqueous solution containing $1\,g$ of urea boils at $100.25\,^oC$. The aqueous solution containing $3\,g$ of glucose in the same volume will boil at ........ $^oC$. (Molecular weight of urea and glucose are $ 60 $ and $180$ respectively)
→Zinc can be coated on iron to produce galvanized iron but the reverse is not possible. It is because
Which is incorrect statement about heats of combustion ?
The dipole moment of $H_2O_2$ is more than that of $H_2O$ but $H_2O_2$ is not a good solvent because
→