MCQ
Which one among the following resonating structures is not correct?
- A
- B
- C
- ✓
✓
Answer
Correct option: D.
d
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
An ideal gas in a thermally insulated vessel at internal pressure $=P_1$, volume $=V_1$ and absolute temperature $= T _1$ expands irreversibly against zero external pressure, as shown in the diagram. The final internal pressure, volume and absolute temperature of the gas are $P _2, V _2$ and $T _2$, respectively. For this expansion,
→$(A)$ $q=0$ $(B)$ $T_2=T_1$ $(C)$ $P_2 V_2=P_1 V_1$ $(D)$ $P_2 V_2^\gamma=P_1 V_1^\gamma$
With the help of following data, find out the change in heat content for the reaction......$kJ$
→$C_2H_4(g) + H_2(g) \to C_2H_6(g)$
| Bond | Bond energy $(kJ)$ |
| $C-H$ | $413$ |
| $C-C$ | $348$ |
| $C=C$ | $610$ |
| $H-H$ | $436$ |
Which of the following have no unit?
The difference between bond orders of $\mathrm{CO}$ and $\mathrm{NO}$ is $\mathrm{NO}^{\oplus}$ is $\frac{\mathrm{x}}{2}$ where $\mathrm{x}=.....$
→(Round off to the Nearest Integer)
An element $(A)$ occurs in the short period having electronic configuration $ns^2\,np^1$. The formula of its oxide will be
→Conside the following reactions:
→$\mathrm{NaCl}+\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}+\mathrm{H}_{2} \mathrm{SO}_{4}(\mathrm{Conc} .) \rightarrow(\mathrm{A})+$ Side products
$(\mathrm{A})+\mathrm{NaOH} \rightarrow(\mathrm{B})+$ side product
$(\mathrm{B})+\mathrm{H}_{2} \mathrm{SO}_{4}(\mathrm{dilute})+\mathrm{H}_{2} \mathrm{O}_{2} \rightarrow(\mathrm{C})+$ Side product
The sum of the total number of atoms in one molecule each of $(A), (B)$ and $(C)$ is
$5$ -Bromo- $2 $ -cyclopropyl cyclohex- $2$ -enol have correct structure is
→Which is formed when benzene is heated with chlorine in the presence of sunlight
Caffeine has a molecular weight of $194$. If it contains $28.9\%$ by mass of nitrogen, number of atoms of nitrogen in one molecule of caffeine is
→Outermost electronic configurations of four elements $A, B, C, D$ are given below.
→$3 s^{2}$; $3 s^{2} 3 p^{1}$; $3 s ^{2} 3 p ^{3}$; $3 s^{2} 3 p^{4}$
The correct order of first ionization enthalpy for them is.