MCQ
How many resonance structures are there for anthracene ?
  • A
    $6$
  • B
    $5$
  • $4$
  • D
    $2$

Answer

Correct option: C.
$4$
c

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

A metal chloride contains $55.0 \%$ of chlorine by weight.$100\,mL$ vapours of the metal chloride at $STP$ weigh $0.57\,g$. The molecular formula of the metal chloride is $...$.(Given : Atomic mass of chlorine is $35.5\,u$ )
If radius of second Bohr orbit of the $He ^{+}$ion is $105.8\,pm$, what is the radius of third Bohr orbit of $Li ^{2+}$ ion?
The ratio of the energy of a photon of $2000\,\mathop A\limits^o $ wavelength radiation to that of $4000\,\mathop A\limits^o $ radiation is
0.1M CH3COOH and 1.01CH3COONa are mixed togethere, what will be pH of buffer solution if $\text{pK}_{\text{a}} = 4.75 [\log 10-1 = -1]$
$\begin{array}{*{20}{c}}
  {C{H_3} - CH - C{H_2} - C{H_3}\xrightarrow[{hv}]{{C{l_2}}}(x)} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array} =$ Number of monochloro product including stereoisomers.
The degree of dissociation $(\alpha )$ of $PCl_5$ obeying the equilibrium;  is $PC{l_5}\, \rightleftharpoons \,PC{l_3}\, + \,C{l_2}$ related to the pressure at equlibrium by
Find the equilibrium constant for equilibrium
$HCO{O^ - } + {H_2}O \rightleftharpoons HCOOH + O{H^ - }$
In a solution of $0.1\, M\, HCOONa$. $K_a(HCOOH) = 1.8 \times 10^{-4}$
Radius of the nucleus is equal to $10^{-12}\, cm.$ and that of the atom is equal to $10^{-8} \,cm.$ What is the fraction of the volume of the atom occupied by nucleus ?
In which of the following molecules molecular orbital is filled after and molecular orbitals?
The number of neutron in tritium is